North Korea's Nuclear and Missile Development and Japan's Defense
Hideshi Tokuchi
1. Introduction: The Korean Peninsula and Japan's Security
Looking back over the past century of Japanese history, the importance of the Korean Peninsula to Japan's security is apparent.
The Sino-Japanese and Russo-Japanese wars were fought over interests in the Korean Peninsula. Japan's rearmament in the post-WWII era in the form of the creation of the National Police Reserve and the foundation of the Self-Defense Forces was precipitated by the outbreak of the Korean War. Today, the Japan-US Joint Statement of November 1969 is attracting renewed attention concerning the Taiwan issue; its Paragraph 4 begins with the perceptions of the leaders of the two countries on the Korean Peninsula situation. 1 It was over the Carter administration's attempt to withdraw US ground troops from South Korea that Masamichi Inoki wrote to US National Security Advisor Brzezinski that he wanted to knock down Undersecretary of State Philip Habib. 2 The 1997 "Guidelines for US-Japan Defense Cooperation" was discussed by many people in relation to Korean Peninsula contingencies, as the first North Korean nuclear crisis took place just before the release of the document. One of the reasons for formulating the legislation to deal with contingencies in 2002 was a North Korean armed spy boat incident. The National Defense Program Guidelines (NDPG) for FY2005 and beyond, which pointed to Japan's security in the post-9/11 era of international terrorism, was occasioned by Japan's introduction of missile defense system that was discussed mainly in relation to North Korean missiles. Many of the so-called 15 simulation cases presented by the Japanese government at the time of the security legislation to put the changes in constitutional interpretation into practice seemed to make one imagine Korean Peninsula contingencies.
Looking at changes in the NDPG, the current 2018 version is the first NDPG that put a section on China before that on North Korea, while in the NDPG for FY2011 and beyond and the NDPG for FY2014 and beyond, the description of North Korea appeared before that of China. Reviewing the description of the international security environment around Japan in different versions of the defense white paper, the present order of arrangement of relevant sections --- China, North Korea, and Russia --- first appeared in 2019. Until 2018 sections on the three countries had been carried as North Korea, China, and Russia.
Even though the advent of the Indo-Pacific era has driven the Korean Peninsula in one corner of the regional map and sometimes outside of it, the peace and stability of the Korean Peninsula claim emphasis as a matter of Japan's security. The fact that North Korea is a serious threat to Japan remains unchanged.
2. North Korea's Nuclear and Missile Capabilities
Today, North Korea is significantly inferior when it comes to conventional forces, and much of its equipment is obsolete. It seems that the country is attempting to compensate for its inferiority by concentrating on building up its weapons of mass destruction and ballistic missiles. 3
The Stockholm International Peace Research Institute (SIPRI) estimated the number of North Korea's nuclear warheads to be 30-40 in 2019-2020, but according to the 2021 edition of the SIPRI Yearbook, it has increased by some ten pieces over the past year to 40-50. 4 Japan's defense white paper of 2021 also points out that if North Korea were to restart its nuclear reactors, it could produce enough plutonium to make one nuclear bomb annually. 5 Siegfried Hecker estimates that North Korea possessed 45 pieces of nuclear warheads as of the end of the Trump administration. 6
As for the number of missiles possessed by North Korea, Japan's defense white paper of 2021 cites Jane's Yearbook estimate of 700 to 1,000 in total, of which 45% are Scud class, 45% are Nodong class, and the remaining 10% are other medium- to long-range missiles. 7 As for the number of launchers, the US Defense Intelligence Agency (DIA) report states many missiles as "undetermined." The same report estimates the total number of transporter erector launchers (TELs) to be over 200 in total: less than 100 for Scuds B/C (maximum range: 300-500 km), less than 100 for Nodong class (over 1,200km maximum range), less than 50 for Musudan class (over 3,000 km maximum range), and one submarine at least for Pukguksong-1 (over 1,000 km maximum range). 8
Japan's defense white paper of 2021 lists 18 types of missiles that North Korea has possessed and developed. 9 The breakdown of 56 ballistic missiles launched in the five years from 2017 to October 2021 is as follows: 10
2017 (17 in total):
Scud ER x 4, Improved Scud missile x 1, Pukguksong-2 x 2, Hwasong-12 x 3, Hwasong-14 x 2, Hwasong-15 x 1, and Unidentified x 4.
2018 (0)
2019 (25 in total):
Short-range ballistic missile A x 8, Short-range ballistic missile B x 4, Short-range ballistic missile C x 8, and Short-range ballistic missile (possible) x 4.
2020 (8 in total):
Short-range ballistic missile B x 2 and Short-range ballistic missile C x 6.
2021 (6 in total as of October):
New ballistic missile (North Korea claims a "new tactical guided missile.") x 2, Missile similar to short-range ballistic missile A x 2, New SLBM x 1, and Possible ballistic missile (North Korea claims a "hypersonic missile.") x 1.
North Korea is recently launching new types of ballistic missiles not known before. Although most of them are short-range missiles, technologies associated with solid fuels and irregular trajectory missiles will most likely be applied in the future to longer-range missiles. Although the current level of reliability of older missiles such as Nodong cannot be identified, if North Korea's missile development continues at this pace, missiles that would pose a direct threat to Japan will advance in performance and increase in number. 11 On top of this, there are concerns about the possibility of a hydrogen bomb being mounted on a missile, as well as apprehensions about more powerful warheads and the increasing difficulty of interception, should North Korea's allusion to a "supersonic gliding warhead" prove true.
3. Offense and Defense
There would be no end to the debate over which prevails in combat, offense or defense. Since strategic bombing did not necessarily produce the expected results during World War II, offensive superiority was put on the defensive. However, the idea of offensive superiority regained predominance following Japan's surrender in the wake of the atomic bombings of Hiroshima and Nagasaki. 12 Afterward, the United States proposed to the Soviet Union the limitation of anti-ballistic missile (ABMs) as it began the Strategic Arms Limitation Talks (SALT) with the latter. In 1967, the Soviet Union did not commit to the US theory that ABMs would cause strategic instability. In 1969, however, the Soviet Union came to aim at ABM limitations, which resulted in SALT1 in 1972. 13
Despite the signing of the ABM Treaty, the Soviet Union continued to build up its strategic offensive weapons. In the 1980s, the United States became aware that the Soviet Union had installed a large phased array radar at Krasnoyarsk, which the United States believed was "a critical part of a radar system designed to provide radar guidance for antiballistic missiles protecting the entire nation." 14 The United States noticed that the Soviet Union did not share the offensive superiority strategy. These developments led to the Strategic Defense Initiative (SDI) under the Reagan administration, which, however, was not put to practical use due to the immaturity of technology and cost increase.
On the other hand, the sinking of the Israeli destroyer Eilat by an Egyptian missile boat in July 1967 raised awareness of the need for anti-ship missile defense. This led to the development of the Aegis system, which now constitutes part of the ballistic missile defense system.
Today, many believe that a well-balanced possession and deployment of offense and defense without lopsidedness will lead to stability.
In particular, ballistic missiles are difficult to capture due to their eminently small radar cross sections. They are also hard to track because they fly at high altitudes at high speeds; reportedly, the speed of a ballistic missile with a range of 1,000km is Mach 10 at the time of impact, and that of an ICBM is Mach 20-30. Furthermore, ballistic missiles are hard to destroy by proximity fuse missiles. It is necessary to hit them directly. Consequently, powerful radars, high-speed and high-capacity computers, and precision guidance technology are all indispensable to intercept ballistic missiles.
A ballistic missile loaded with a nuclear warhead would cause far more devastating damages on humans, properties, the economy, and infrastructures --- compared to its carrying a conventional warhead. A ballistic missile loaded with a thermonuclear weapon would have still greater destructive power; the geographic area subject to damage would also be more extensive, and restoration would likely take a long time. Therefore, given a nuclear attack, the missile defense system must be 100 percent capable of intercepting a ballistic missile; if even a single ballistic missile slipped through the defense network, the result would be devastating.
North Korea's new ballistic missiles A and B are considered capable of traveling at lower altitudes than usual and with irregular trajectories; many believe that such missiles aim to breach missile defense networks. It is likely that the launch of lofted trajectory missiles detected since 2016 has been conducted primarily for data collection purposes. Yet, we cannot dismiss the possibility that those missiles could be fired toward Japan. Increased entry speeds make their interception difficult. 15
As for the interception of hypersonic missiles and irregular trajectory missiles, their flight altitudes and mobility will lower the probability of interception by existing missiles such as SM-3, SM-6, and PAC-3. Therefore, if we continue to deal with such new missiles with a missile defense system, it will be imperative to improve system capabilities or develop a new one. In the United States and Europe, numerous proposals have already come out on hypersonic missile interception systems. 16
4. Japan's Response (Discourses in the United States)
How to respond to such missile threats is what Japan must address. But the United States, as Japan's ally, has much concern about the Japanese response, on which the safety of US bases in Japan will depend and whether or not operations are possible from those bases. Since Japan began to discuss the possibility of possessing the so-called "enemy base strike capability," the United States seems to have become increasingly concerned about it. Reportedly, the United States was initially negative about Japan's possession of an "enemy base strike capability," but judging from recent discussions in America, at present she is not necessarily against it. 17
Regardless of which course Japan chooses to take on this issue, it is inevitable that Japan and the United States will build a joint response posture based on the Japan-US alliance; Japan will have to pay attention to US concerns. Next, I would like to introduce some discourses of American experts.
(1) Japan's "Nuclear Option"
Concerning Japan's "nuclear option," two choices would be conceivable: the possession of nuclear weapons by Japan and the US deployment of nuclear weapons in Japan. Some of the recent discussions on each of these are as follows.
Doug Bandow of the Cato Institute proposes "friendly proliferation" to Asian countries that are US allies, although his discussion is not focused solely on the North Korean threat. Skeptical about the reliability of extended deterrence, he argues that the possession of nuclear weapons by Japan, South Korea, and Australia is not a good strategy but would do the least harm, and that it could impose restrictions on North Korea' nuclear program, even if it could not make North Korea give it up. 18
In discussing North Korea's nuclear and missile threats, former Deputy Under Secretary of Defense Richard Lawless proposes that the United States should deploy nuclear-capable next-generation INF systems in Japan. He admits that North Korea's nuclear threat will remain for long as it is directed to Japan, the United States, and South Korea. His proposal stands on the idea that the reliability of US extended deterrence should be made more visible. He recommends a dual-key arrangement based on the premise of joint US-Japan command and control. In addition to the above, Lawless suggests another option with high survivability: the US-Japan joint operation of ballistic missile-carrying submarines and their deployment in Japan and Guam. 19
Former Secretary of Defense Chuck Hagel and others propose that the United States and its allies should seriously consider the forward deployment of nuclear-capable systems to deal with threats from, among other countries, North Korea. They also recommend: 1) Japan-US-ROK cooperation; 2) QUAD-ROK cooperation, and 3) the creation of a framework similar to the NATO Nuclear Planning Group (NPG) or an Asian Nuclear Planning Group, thereby including Australia, Japan, and South Korea in the US nuclear planning process. 20
(2) Japan's Possession of "Strike Capabilities"
In discussing Japan's response to the North Korean missile threat, Bruce Klingner of the Heritage Foundation points out the advantages of Japan's possession of "strike capabilities": those capabilities would impose greater costs on its adversaries, deter subsequent attacks, and provide some reinforcement to US capabilities; integrating such strike capabilities into the US-Japan alliance would mitigate Japan's concerns about the reliability of US extended deterrence. He also refers to the development of an upgraded, extended-range version of the Type 12 surface-to-ship missile. His proposal also includes mention of the division of roles between the two allies, following which Japan possesses cruise missiles to aim at fixed targets in North Korea, "while the United States maintains the mission of attacking North Korean mobile missiles." He also recommends strengthening Japan's missile defense, integrating Japanese "strike capabilities" into the Japan-US alliance, creating a Japan-US joint command, increasing defense spending, and promoting Japan-US-ROK cooperation. 21
Jim Hartman, a US Navy's liaison officer to the Japan Maritime Self-Defense Force, pointed out that in the development of its maritime defense capabilities, Japan has so far aimed at a force complementary with the US military, but it is now seeking to acquire the capabilities that overlap with those of the United States (amphibious warfare capabilities and "carrier-based" fighter aircraft). He argues that it is necessary to discern whether Japan is motivated by a political desire for a more independent maritime strategy or by rational military calculations. 22 Although Hartman does not discuss those overlapping investments by Japan as a response to the North Korean threat, his discussion implies many things to consider when looking back at political debates on Japanese "strike capabilities."
5. Japan's Response (Japanese Discourses on "Enemy Base Attack Capability")
When Japan began to consider the possession of "response capability to address the means of ballistic missile launches and related facilities" (so-called "strike capabilities" or "enemy base attack capability"), the topic was deliberated mainly in relation to North Korea's growing ballistic missile capabilities. The National Defense Program Guidelines for FY 2014 and beyond also covered this issue in that context. 23 Today, however, this topic is often discussed in relation to China's growing military power and the US-China missile gap.
For example, Sugio Takahashi argues that, as a matter of Japan's security following the expiration of the INF Treaty, it is necessary to rebuild deterrence postures in East Asia including one against the North Korean threat, and that to give high priority to systems with high strategic effectiveness, Japan and the United States should first set a direction at the level of military strategy and then discuss particular specifications and deployment sites for hardware. He suggests ground-launched ballistic missiles and hypersonic glide weapons as an imaginable option. 24
Satoshi Morimoto proposes the acquisition of ground-launched cruise missiles, subject to some preconditions, as a potential response to the strategic environment in which the US-China strategic rivalry will further intensify, especially in the sea and airspace surrounding Japan. 25
In order to make China understand that it will not be able to achieve its military objectives even if it attempts to invade the Senkaku Islands or Taiwan, Yoko Iwama and Masashi Murano propose the introduction of anti-ship cruise missiles to block the approach of Chinese naval vessels and that of ballistic missiles or hypersonic glide missiles to neutralize Chinese airbases located on the Chinese coast for a certain period. 26 In pointing out the costs of operating, maintaining, and improving the capabilities of missile defense, they argue that "as the adversary's missile capability improves in quantity and quality, costs for the defender to bear will increase proportionately; eventually, the defender will be in due course driven to face financial and operational limits." They add that "time is not favorable to Japan, given that North Korea continues to develop and increase production of new missiles while denuclearization is making no progress." 27
6. Revision of the "National Security Strategy" and the "National Defense Program Guidelines"
The Japanese government has recently announced that it will revise the National Security Strategy and the NDPG. It has also expressed its intention to "boldly engage in a reinforcement of our defense capabilities, including our... missile defense capabilities that include further effective measures." 28 It is not clear what this statement means. Yet, since Japan has been discussing "response capability to address the means of ballistic missile launches and related facilities" for the past eight years since 2013, Japan may not anymore be able to postpone a conclusion no matter what it may reach.
As stated by Iwama and Murano, "it is impossible to distinguish offense and defense in terms of those capabilities and actions necessary to deny an adversary the achievement of its tactical objectives. 29 Instead of a non-essential debate on what we should name those capabilities that have been called by different names such as "enemy base attack capabilities," "strike capabilities," and "counterattack capabilities," what we most need are expert and strategic studies and open discussions on the identification of capabilities necessary for Japan's national defense as a whole; the identification of priorities; the division of roles between Japan and the United States and the development of the necessary systems for that purpose; and the strengthening of industrial and technological underpinnings.
(Senior Fellow, National Graduate Institute for Policy Studies)
- September, 2024, " The Russia-Ukraine War Viewed from War Termination Theory" by Yasuaki Chijiwa Chief Research Fellow, National Institute for Defense Studies.
- September, 2024, " How the Winter War Ended: A "Compromised Peace" Ends the Ukraine War?" by Tomoyuki Hanada Chief Research Fellow, National Institute for Defense Studies.
- September, 2024, " The End of the Soviet-Afghan War" by Takeshi Yuasa Professor, Sophia University Professor, Sophia University.
- July, 2024, " The Yoon Suk-yeol Administration and the ROK-Japan Relations" by CHOI, EunmiJ, The Asan Institute for Policy Studies, Research Fellow.
- July, 2024, " The 22nd National Assembly Election and South Korean Politics " by Hideki Okuzono, Professor, University of Shizuoka.
- July, 2024, " South Korea's Economic Security Policy and New Japan-ROK Economic Cooperation" by Satoru Okuda, Professor, Asia University.
- July, 2024, " Japan-ROK Cooperation: Not an Option but a Must" by Chey Tae-won, Chairman and CEO SK Inc.
- July, 2024, "Examining the Yoon Administration's Foreign Policy over the Past Two Years " by Junya Nishino, Professor, Keio University
- July, 2024, "North and South Korea Enter a New Phase of Competition" by Narushige Michishita, Executive Vice President and Professor at the GRIPS.
- July, 2024, "The Camp David Summit and U.S.-Japan-ROK Security Cooperation" by Yasuyo Sakata.
- April, 2024, "The Middle East Question and Japan" by Sinan Levent, Professor, Ankara University
- April, 2024, "The Israel-Hamas War and the Disruption of the Rules-Based International Order-Viewed from Theories of International Politics-" by Matake Kamiya, Professor, National Defense Academy of Japan
- March, 2024, " Regional Political Dynamics in the Middle East - Factors Changed and Remained unchanged after the October 7th Incident-" by Amane Kobayashi, Senior Researcher, the Institute of Energy Economics, Japan
- March, 2024, "The Ukraine War and Russia's Changing Middle East Diplomacy " by Taisuke Abiru, ,Senior Research Fellow, the Sasakawa Peace Foundation
- March, 2024, "Superpowers' Engagement with the Middle East and Their Intentions " (Edited lecture transcript) by Koichiro Tanaka, Professor, Keio University
- March, 2024, " Why the Israel-Hamas War Broke Out?" by Hiroyuki Suzuki, Professor, Associate Professor, The University of Tokyo
- March, 2024, " The Middle East Peace Process-Its Development and Future " by Chie Ezaki, Associate Professor, National Defense Academy of Japan
- March, 2024, "The Origin and Prospects of the Question of Palestine -Transformation of Israeli Politics and "10/7" as a Boiling Point- " by Aiko Nishikida, Professor, Keio University
- January, 2024, "Indonesia's Global South Diplomacy and Its Impact on Domestic Politics" by Jun Honna, Professor, Ritsumeikan University
- January, 2024, "Brazilian Foreign Policy and the Global South" by Hiroyuki Urabe, Professor, Dokkyo University
- January, 2024, "Africa's Population Explosion:How the "Last Frontier" Will Change the World" by Keiichi Shirato, Professor, Ritsumeikan University
- January, 2024, "The Impact of PM Modi's Global South Policy on the Military Strategy of India" by Satoru Nagao, Research Fellow, Hudson Institute
- December, 2023, "The Global South Concept and Its Historical Development and Outlook" by Ken Jimbo, Professor, Keio University
- December, 2023, "India's Global South Diplomacy and Japan" by Toru Ito, Professor, National Defense Academy
- December, 2023, "The Global South Viewed from China's Perspective" by Shin Kawashima, Professor, the University of Tokyo
- October, 2023, " Political and Social Divide in the United States and Challenges for Democracy" by Kazuhiro Maeshima, Professor, Sophia University
- October, 2023, " Has US Foreign Policy Doctrine Changed? " by Tsuneo Watanabe, senior Fellow, Sasakawa Peace Foundation
- October, 2023, " America's Journey to Hegemony and Its Challenges" by Koji Murata, Professor, Doshisha University
- September, 2023, " A Medium- to Long-Term Outlook for the US Economy―Can America Win the Competition with China?―" by Tatsuhiko Yoshizaki, Chief Economist, Sojitz Research Institute, Ltd.
- September, 2023, " China's Strategy toward the U.S " by Toshiya Tsugami, Adjunct Researcher, the Japan Institute of International Affairs
- September, 2023, " The Deepening Security Dilemma in US-China Relations " by Ryo Sahashi, Associate Professor, the University of Tokyo
- July, 2023, "How Would North Korea and China Use Nuclear Weapons? -- Scenarios for Discussion" by Narushige Michishita, Professor at the National Graduate Institute for Policy Studies
- July, 2023, "Japan's Nuclear Strategy" by Nobukatsu Kanehara, Visiting Professor at Doshisha University
- July, 2023, "G7 Hiroshima Summit and Efforts for a Safer World Without Nuclear Weapons" by Nobushige Takamizawa, Visiting Professor at the University of Tokyo
- July, 2023, "Roundtable Discussion—Let's Talk Frankly About Nuclear Issues" by SSDP Discussion Members
- June, 2023, "Exploring the Possibility of Nuclear Attacks on Japan-Nuclear Simulations in the Era of "Three-Front Nuclear Threats" by Hiroyasu Akutsu, Professor, Heisei International University
- June, 2023, "China's Aim to Become a Nuclear Superpower" by Masafumi Iida, Head of China Division at the National Institute for Defense Studies
- June, 2023, "Challenges for Nuclear Arms Control in the Era of Strategic Competition Among Major Powers" by Nobumasa Akiyama, Professor, Hitotsubashi University
- June, 2023, "Mechanisms and Functions of Nuclear Deterrence-Development of US Nuclear Strategic Theory" by Masashi Murano, Research Fellow of Hudson Institute
- April 2023, "Changing NATO's "Achilles Heel"—Security in the Baltic Region" by Sanshiro Hosaka, Fellow,The International Centre for Defence and Security, Estonia
- April 2023, Evolution of European Security System - Visualization of Deterrence by NATO and the "Russian Problem" by Michito Tsuruoka, Associate Professor, Keio University
- April 2023, "An Expanded NATO's Nuclear Strategy" by Yoko Iwama
- March, 2023, "Germany's Civilian Power Model—Modification or Termination?--Germany Struggling with the War in Ukraine" by Toshiya Nakamura, Professor, Nagoya University
- March, 2023, "France and the Ukraine War―The Logic Behind Macron's Security Policy" by Ken Endo, Professor, The University of Tokyo
- March, 2023, "The Russo-Ukrainian War and the British Response: 2014-2023" by Yuichi Hosoya, Professor, Keio University
- March, 2023, "Where is America Heading—Implications and Challenges for the Allies" by Koji Murata, Professor, Doshisha University
-
December 2022, Proposal "Defending Our Country – Defense Policy in a New Cold War Era" was announced
- Front Cover
- Changes in the Security Environment Surrounding Japan - Shifting Power Balance and the Three Front Threats Ken Jimbo
- How Will "Japan Contingencies" Emerge? Osamu Onoda
- The Japan-US Alliance Revisited: Is it Dependable? Chikako Kawakatsu Ueki
- A New Phase of Defense Diplomacy and Defense Production and Technology Base Ippeita Nishida, Tsuneo Watanabe
- Intelligence Activities in the Post-Ukraine War Era Jun Nagashima
- Responding to the Nuclear Threat Masashi Murano
- No Time to Lose for Improving Japan's Defense Capabilities - Can the JSDF Defend the Homeland? - Ryoichi Oriki
- Toward the Formulation of a New "National Security Strategy" Hideshi Tokuchi
- October 2022, "Japan-China Relations under the Long-term Administration of Xi Jinping: Current Status, Prospects, and Expectations" written by Kazuyuki Suwa, Professor, University of Shizuoka
- October 2022, "China's Policy on the Global South --- China's World View and the Configuration of the US-China Confrontation " written by Shin Kawashima, Professor, the University of Tokyo
- October 2022, "Military Strategy of Xi Jinping's China" written by Bonji Ohara, Senior Fellow, Sasagawa Peace Foundation
- September 2022, " Social Governance by the Communist Party of China: The Present State and the Future Prospects " written by Kazuko Kojima, Professor, Keio University
- September 2022, "The Relationship between Domestic Politics and Diplomacy under the Xi Jinping Administration- Why Were the Large-Scale Military Exercises Decided?" written by Chisako T. Masuo, Professor, Kyushu University
- September 2022, "Xi Jinping's China--- Prospects for Its Climate Change Policy ---" written by Takashi Sekiyama, Associate Professor, The University of Kyoto
- August 2022, " Current Assessment of the Xi Jinping's Rule and Prospects for the Third Term of the Xi Administration " written by Takashi Suzuki, Associate Professor, Aichi Prefectural University
- August 2022, " Economic Challenges Awaiting the Xi Jinping Administration As it Enters its Third Term" written by Toshiya Tsugami, Director, Tsugami Toshiya's Works
- July 2022, "The Russian Invasion of Ukraine and the Future International Legal Order" written by Masahiro Kurosaki, Associate Professor, National Defense Academy
- July 2022, "The Ukraine War and Security in East Asia" written by Narushige Michishita, Vice President, National Graduate Institute for Policy Studies
- July 2022, "How Will the Ukraine War Change the New US-China Cold War?" written by Yasuhiro Matsuda, Professor, the University of Tokyo
- July 2022, "Impact of the Ukraine War on the Global Economy" written by Tatsuhiko Yoshizaki, Chief Economist, Sojitz Research Institute, Ltd.
- June 2022, "Why War Occurs in Europe?--The Structural Transformation of the European Security Order in the Post-Cold War Era --" written by Yuichi Hosoya, Professor, Keio University
- June 2022,"The Russia-Ukrainian War and the Behind-the-Scenes Stance of the United States" "On Economic Security" written by Tsuneo Watanabe, Senior Fellow, Sasakawa Peace Foundation
- June 2022, "The Russia-Ukraine War and NATO", written by Michito Tsuruoka, Associate Professor, Keio University
- June 2022, "The Ukrainian War Viewed from Theories of International Politics" written by Matake Kamiya, Professor, National Defens Academy
- March 2022, "Economic Security Challenges and Cyber Security" written by Jun Osawa, Senior Research Fellow, Nakasone Peace Institute
- March 2022, "On Economic Security" written by Matake Kamiya, Professor, the Ntional Defense Academy
- March 2022, ""Economic Security" and the Review of the 2013 NSS and the Related Strategy Documents" written by Nobushige Takamizawa, Visiting Professor, the University of Tokyo
- March 2022, "The US-China Rivalry and Economic Security" written by Yuzo Murayama, Professor, Doshisya University
- March 2022, "Japan's National Security Policies and Science and Technology" written by Nobukatsu Kanehara, Professor, Doshisya University
- March 2022, "Economic Security in the Free Trade Regime" written by Kazuto Suzuki, Professor, the University of Tokyo
- January 2022, "The 2022 South Korean Presidential Election and the Next Administration's Foreign and Security Policy" written by Junya Nishino, Professor, Keio University
- January 2022, "North Korea's Nuclear and Missile Development and Japan's Defense" written by Hideshi Tokuchi, Senior Fellow, GRIPS
- January 2022, "What will Become of Japan-South Korea Relations? The 1965 Japan-South Korea Treaty System in Jeopardy" written by Masao Okonogi, Professor Emeritus, Keio University
- December 2021, "Economic and Social Conditions in North Korea and its Relations with South Korea" written by Mitsuhiro Mimura, Chief Research Fellow, The Economic Research Institute for Northeast Asia.
- December 2021, "China's Korean Peninsula Policy and North Korea" written by Shin Kawashima, Professor, the University of Tokyo.
- December 2021, "China's Korean Peninsula Policy and North Korea" written by Shunji Hiraiwa, Professor, Nanzan University.
- December 2021, "What to Do with the Relations with North Korea?" written by Hitoshi Tanaka, Chairman for Institute for International Strategy at the Japan Research Institute.
- October 2021, "Strategic Implications of North Korea's Enhanced Nuclear and Missile Capabilities" written by Narushige Michishita, Vice President, National Graduate Institute for Policy Studies.
- October 2021, "The Biden Administration's North Korea Policy: Its Low Priority and Looming Crises" written by Tsuneo Watanabe, Senior Fellow, Sasakawa Peace Foundation.
- October 2021, "The Evolution of the US-ROK Alliance: Tasks in the Biden Era" written by Yasuyo Sakata, Professor, Kanda University of International Studies.
- September 2021, "The Development of Regional Security Architecture: From Asia-Pacific to Indo-Pacific" written by Ken Jimbo, Professor, Keio University.
- September 2021, "The Strategic Development of Japanese Security Cooperation under Superpower Competition and the Development of the FOIP and its Operationalization" written by Nobushige Takamizawa, Visiting Professor, Graduate School of Public Policy, The University of Tokyo.
- August 2021, "Security Perceptions of Central Asian Countries--- From the Perspective of China Studies ---" written by Shin Kawashima, Professor, the University of Tokyo.
- August 2021, "Security in the Indian Ocean Region---Implication of the Galwan Incident for QUAD in the Indo-Pacific" written by Dr. Satoru Nagao, Fellow (Non-Resident), Hudson Institute.
- August 2021, "Easternization and Security in Asia" written by Tsuneo Watanabe, Senior Fellow, Sasakawa Peace Foundation.
- July 2021, "The Ideas of "Autonomy" and "Self-Reliance" in Contemporary India's Foreign Strategy" written by Kazutoshi TAMARI, Associate Professor,Chukyo University.
- July 2021, "Thailand's Security Policies and Threat Perceptions" written by Saya Kiba, Associate Professor, Komatsu University, Faculty of Intercultural Communication.
- July 2021, "Myanmar's Security Perceptions and the February 1 Coup d'Etat" written by Yoshihiro Nakanishi, Associate Professor, Kyoto University.
- July 2021, "Australia's Security Perceptions and the "Asia Threat"" written byTomohiko Satake, Senior Fellow, Defense Policy Division, Policy Studies Department, NIDS .
- June 2021, "The Indo-Pacific Regional Architecture: Its Future--- Multipolar Order Beyond US-China Relations ---" by Tsutomu Kikuchi, Professor, Aoyama Gakuin University
- June 2021, "The Quad Plus in the Security of Asia: Its Significance and Outlook" by Hideshi Tokuchi, Senior Fellow, National Graduate Institute for Policy Studies
- June 2021, "Indonesian Views and Perceptions on National Security" by Nobuhiro Aizawa, Associate Professor, The Graduate School of Social and Cultural Studies, Kyushu University
- June 2021, "Normalized Tensions in the Cross-Strait Relations--- Structural Changes in Taiwanese Society and the Xi Jinping Administration's Strategic Shift ---" by Yasuhiro Matsuda, Professor, The University of Tokyo
- June 2021, "China's Maritime Strategy and Responses of the United States and Japan" by Yoji Koda, Former Commander in Chief, Self Defense Fleet
- June 2021, "The South China Issues from the Perspective of the International Law Order",by Shigeki Sakamoto, Emeritus Professor, Kobe University
- May 2021, "Indonesian Views and Perceptions on National Security" by Nobuhiro Aizawa, Associate Professor, Kyushu University
- May, 2021, "The Philippine Foreign and Security Policy Perspective" written by Yusuke Takagi Associate Professor,National Graduate Institute for Policy Studies.
- May, 2021, "Vietnam's Security: Challenges and Responses" written by Tomotaka Shoji Head, Asia and Africa Division, Regional Studies Department, National Institute for Defense Studies
- March, 2021, "Can the Biden Administration Restore America as a Global Leader?" written by Matake Kamiya, Professor, the National Defense Academy of Japan.
- March, 2021, "The Biden Administration and Japan's Security Strategy" written by Hideshi Tokuchi, Senior Fellow, National Graduate Institute for Policy Studies.
- February,2021, "US Foreign and Security Policy Direction Viewed from the Biden Administration's Lineup" written by Tsuneo Watanabe, Senior Fellow, Sasakawa Peace Foundation
- February,2021, "Trade Policies of the Biden Administration" written by Takaaki Asano, Senior Analyst, Sumitomo Corporation Global Research Co. Ltd.
- February,2021, "The Biden Administration's Policy toward Russia" written by Taisuke Abiru, Senior Fellow, Sasakawa Peace Foundation
- January,2021, "Will US Policy Toward China Change?" lectured by Ryo Sahashi, Associate Professor, the University of Tokyo
- January,2021, "How will China View the Biden Administration?" written by Bonji Ohara, Senior Fellow, Sasakawa Peace Foundation
- January,2021, "An Assessment of the 2020 US Presidential Election-American Democracy Now-" lectured by Fumiaki Kubo, Professor, the University of Tokyo
- January,2021, "Two Trumpian Mysteries-Why did Trump win over 70 million votes? Why is his outrageous behavior unchecked?-" lectured by Kazuhiro Maeshima, Professor, Sophia University
- September, 2020, "The Novel Coronavirus (COVID-19) Pandemic and Internationa Relationsl" by Matake Kamiya, Professor, National Defense Academy of Japan
- September, 2020, "The Policy Agenda for the Xi Jinping Administration- COVID-19 Countermeasures and China's International Relations -" by Shin Kawashima, Professor, The University of Tokyo
- "Control in the United States and International Relations" by Koji Murata, Professor, Doshisha University
- September, 2020, "The EU's Response to COVID-19 and International Relations" by Yuichi Hosoya, Professor, Keio University
- August, 2020, "The Corona Crisis Seen from a Macroeconomic Perspective" written by Motoshige Itoh, Professor Emeritus, The University of Tokyo
- August, 2020, "The Coronavirus Pandemic and Japan's Infectious Disease Control" written by Takashi Mihara, Senior Research Fellow, NLI Research Institute
- August, 2020, "Infectious Disease Crisis Control in Japan- Recommendations on an Exit Strategy -" written by Kazumasa Oguro, Professor, Hosei University
- August, 2020, "Security against Infectious Disease Threats --- Policy Responses Abroad" written by Takashi Sekiyama, Associate Professor, Kyoto University
- June 2020,"Transformation of the International Order in the Middle East--- Varying Degrees of "Stateness" and Three Directions of the New Order" written by Satoshi Ikeuchi, Professor, Research Center for Advanced Science and Technology, The University of Tokyo
- June 2020,"Destabilization in the Middle East and its Impacts on Japan's Energy Security" written by Amane Kobayashi, Research Fellow, The Institute of Energy Economics
- May 2020: Urgent Recommendations "Toward a V-shaped Recovery after the Novel Coronavirus Pandemic "Coronavirus Testing for All" --- the First Step of the Next Phase"
- May 2020: "US Diplomacy toward Iran: Economic Sanctions as a Diplomatic Tool" Hiroki Sugita Columnist, Kyodo News
- "Russian Factors in the Middle East" Taisuke Abiru Senior Research Fellow, Sasakawa Peace Foundation
- "The SDF Dispatches to the Middle East --- History and Significance" Ippeita Nishida Senior Research Fellow, Sasakawa Peace Foundation
- March 2020, "Space and Security" Kazuto Suzuki Professor, Hokkaido University
- March 2020, "The US Security Space Policy --- With a Focus on the Establishment of Two Space Forces" Yasuhito Fukushima Chief Researcher, The National Institute for Defense Studies
- March 2020, "China's Recent Activities in Space and Cyberspace" Bonji Ohara Senior Research Fellow, Sasakawa Peace Foundation
- March 2020, "Environmental Security and Japan" Takashi Sekiyama Associate Professor, Kyoto University
- March 2020, "Changes in Global Environment and Security --- US Security Strategy" Hideshi Tokuchi Senior Fellow, National Graduate Institute for Policy Studies (GRIPS)
- February 2020, "Cyberspace Security" Motohiro Tsuchiya Professor, Keio University
- February 2020, "Japan's Space and Cyberspace Policy" Yukinari Hirose Former President of the National Institute for Defense Studies
- December 2019, "The US-China Confrontation --- Where Will Hegemony Reside Next?" Akio Takahara Professor, the University of Tokyo
- December 2019, "Challenges Facing the Chinese Economy" Osamu Tanaka Chief Senior Researcher, Institute of Developing Economies, JETRO
- December 2019, "US Strategic Perception on China: Implications for US Allied Partners" Tsuneo Watanabe Senior Fellow, Sasakawa Peace Foundation
- November 2019, "The Xi Jinping Administration's View of the International Order– China's emphasis on United Nations diplomacy and liberal economic policies−" Shin Kawashima, Professor, the University of Tokyo
- November 2019, "The Future of China's Security Strategy" Hideshi Tokuchi, Senior Fellow, National Graduate Institute for Policy Studies
- November 2019, "China --- Its Confidence and Anxiety" Bonji Ohara, Senior Research Fellow, Sasakawa Peace Foundation
- August 2019: Several Perspectives on the Korean Peninsula Issue--- The Deteriorating Japan-South Korea Relationship and the Uncertain Denuclearization of North Korea --- By Masahiro Akiyama Chairman, the SSDP
- July 2019, "An Outlook on the Denuclearization of North Korea--- What is the Stance of North Korea?---", Junya Nishino, Professor, Keio University
- July 2019, "An Outlook on the Denuclearization of North Korea --- How will the US move?", Narushige Michishita, Vice President, National Graduate Institute for Policy Studies
- July 2019, "Discussion on Denuclearization of North Korea", SSDP Discussion Meeting on May 8, 2019
- May 2019: "Current Status and Prospects of South Korea and Japan's Frictions over History: How to address the Judicial Problems", Masao Okonogi, Professor Emeritus, Keio University
- May 2019: "South Korea and Japan's Frictions over History" (Comments), Junya Nishino, Professor, Keio University
- May 2019: Japan and South Korea Relationships (Question & Answer)
- March 2019: "The Present State and Prospects of the Indian Economy and Economic Policies" written by Koji Kobayashi, Senior Economist Mizuho Research Institute Ltd.
- March 2019: "The "Modi diplomacy" in the History of Indian diplomacy--- Departure from or maintenance of the traditional diplomacy? ---" written by Toru Ito, The National Defense Academy of Japan
- February 2019: Dynamics of Indian Politics and the 2019 General Elections, written by Chiharu Takenaka, Professor of Rikkyo University
- February 2019: "Cooperative Strategy" to Realize "Competitive Strategy"--- The composite structure of Japan's "Free and Open Indo-Pacific" strategy (vision) ---, written by Matake Kamiya, Professor at The National Defense Academy of Japan
- January 2019:, A paper, "How will the US midterm elections results affect the Trump administration's foreign policy for 2019?" written by Tsuneo Watanabe, Senior Fellow, the Sasakawa Peace Foundation
- January 2019:, A paper, "The Present and Future of the International Trade Order" , written by Akihiko Tamura, Professor, National Graduate Institute for Policy Studies
- December 2018: The US-China Competition and Japan, written by Ryo Sahashi, Professor at Kanagawa University
- December 2018: An Outlook for the US-China Trade War―What makes the two economically interdependent superpowers confront each other?―, written by Takashi Sekiyama, Associate professor at Toyo University
- September 2018: Proposal, "The Denuclearization of North Korea and the Restoration of Peace in the Korean Peninsula― Correct Perceptions and Eight Proposals on Japan's North Korea Diplomacy-" edited by the Society of Security and Diplomatic Policy Studies
- September 2018: "The Taiwan Policy of the Xi Jinping Administration in its Second Term: An Outlook on Cross-Strait Relations in the New Era" written by Yasuhiro Matsuda, Professor of the Tokyo University
- July 2018: "The EU States and Russia on North Korea Issues- Expansion of Influence through Diplomacy: Attempts and Limitations -" lectured by Yuichi Hosoya, Professor of Keio University
- "An Assessment of the US-North Korea Summit and an Outlook for the Future of the Korean Peninsula" lectured by Junya Nishino, Professor of Keio University
- "Korean Peninsula Issue and Japan's Future Security Policy" written by Hideshi Tokuchi, Senior Fellow of National Graduate Institute for Policy Studies
- July 2018: "US North Korea policy affected by personnel changes in the Trump administration" lectured by Tsuneo Watanabe, Senior Fellow of the Sasakawa Peace Foundation.
- "China-North Korea relationship under Xi Jinping" lectured by Shin Kawashima, Professor of the Tokyo University.
- "North Korean Denuclearization and Russia" lectured by Nobuo Shimotomai, Professor of the Hosei University.
- March 2018: "The Network Hegemony Theory for a Security Architecture in The Asia Pacific Region" lectured by Masahiro Akiyama, Chairman, the Society of Security and Diplomatic Policy Studies
- January 2018: "A Destabilized Middle East" lectured by Koichiro Tanaka, Professor, Keio University
- December 2017: "Problems in Sino-Japanese Relations, 1992-2042" lectured by Ezra F. Vogel, Professor of the Social Sciences Emeritus at Harvard University
- November 2017: "The Future of the Asia-Pacific Region" written by Yoriko Kawaguchi, Fellow, the Meiji Institute for Global Affairs, Former Minister Foreign Affairs
- October 2017: "A New Trend in India's Foreign Policy and Japan" Written by HIROSE,Takako, Professor, Senshu University
- August 2017: "The Shocks that shook the Transatlantic World and their Implication for Japan's Foreign Policy" written by HOSOYA, Yuichi, Professor, Keio University
- August 2017: "Does Economic Interdependence not Encourage Collaboration? ―Thinking Japan-China Relations from an Economic Perspective―" written by Takashi SEKIYAMA, Ph.D., Toyo University
- July 2017: Proposal article "The Trump Administration's Impact on the Cross-Strait Relations" written by Yasuhiro Matsuda, Ph.D.
- June 2017: Proposal article "The outlook for the relationship between two great powers and implications for Japanese diplomacy" written by Professor Shin Kawashima
- May 2017: (Emergency Proposal) Facing the Inconvenient Truth: Re-examining Policy for Peace and Denuclearization of the Korean Peninsula (Chief author, Masao Okonogi)
- March 2017: "Economic Influences of the Trump Administration" written by Professor Motoshige Ito
- February, 2017: Proposal article "Trump's Foreign and Security Policy - Unpredictable President, Realistic Secretaries - " written by Mr. Tsuneo Watanabe is posted on the website of SSDP.
- December, 2016: Proposal article "Reconsidering North Korea Policy: How to Deal with a Nuclear Armed Divided States" written by Professor Masao Okonogi is posted on the website of SSDP.
- Taiwan-Japan Round Table on August 24th, at Capital Tokyu Hotel
- Japan-Korea Political Leaders Dialogue was held on February 10th,2023 at International House of Japan
- March 2022, A remembrance seminar "Remembering Professor Ezra Vogel" held on January 17, 2022
- March 2021, Japan-ROK Parliamentary Dialogue -Japan-ROK Cooperation in the Era of US-China Competition- held on March 11, 2021
- December 2020: The report of the Japan-ROK Future Dialogue held on November 21 to discuss "Japan-ROK Cooperation in the Post-Covid-19 Era
- October 2020: "Responses to COVID-19 and Agendas for the Post-COVID-19 Era", A Brief Overview of the Japan-Korea Experts Dialogue held on July 29,30, 2020
- October 2020: "The China-Taiwan Confrontation over Corona Response and Taiwan's Security" written by Makoto Ogata, Former Chief of the Japan-Taiwan Exchange Association in Taipei
- May 2020: "Rivalries in the Middle East in New Security Dynamics", Written by Sayed Ghoneim, Major General (retired) of the Egyptian Armed Forces, Chairman, Institute for Global Security & Defence Affairs
- March 2020: The Japan-South Korea Relationship in a Cul-de-Sac--- Where is an Exit ? Masao Okonogi Professor Emeritus, Keio Universit
- December 2019: The Hong Kong Upheaval and the Future of Cross-Straits Relations-The 2019 Japan-Taiwan Strategic Dialogue Report OGATA, Makoto Former Chief of the Japan-Taiwan Exchange Association in Taipei
- August 2019: Report; 2019 FUTURE CONSENSUS DIALOGUE --Sustainable Prosperity and Future of Korea-U.S.-Japan Cooperation-- By Future Consensus Institute (Yeosijae)
- June 2019: Report on India – Japan Security Dialogue 2019 by Ms. Vindu Mai Chotani, Ph.D Student, The University of Tokyo
-
June 2019: Four papers on Japan-India Cooperation submitted to India-Japan Security Dialogue 2019
-
Japan's Rationale for a Free and Open Indo-Pacific Vision
Tsuneo Watanabe, Senior Fellow, The Sasakawa Peace Foundation -
The Significance and Possibilities of India-Japan Cooperation in the Concept of the Indo-Pacific
Toru ITO Associate Professor, National Defense Academy of Japan -
Japan-India Defense Cooperation in the Indo-Pacific Context - Operationalizing the Security Aspect of the Indo-Pacific Vision –
Hideshi Tokuchi, Senior Fellow, National Graduate Institute for Policy Studies (GRIPS) -
India-US-Japan Defense Cooperation: What's next?
Dr. Satoru Nagao, Hudson Institute
-
Japan's Rationale for a Free and Open Indo-Pacific Vision
- November 2018: "The Present State of the Japanese Economy and Policy Issues" lectured by Motoshige Itoh, Professor Emeritus at the University of Tokyo.
- November 2018: "Expanding Social Security Expenses and Fiscal Reforms" lectured by Kazumasa Oguro, Professor at Hosei University.
- September 2018: "Taiwan Identity and Cross-Strait Relations and Trump's Taiwan Policy and the Future of Taiwan-US Relations-Discussion at The Second Japan-Taiwan Strategic Dialogue (June 21, 2018, Taipei)-" written by OGATA, Makoto
- September 2018: "Japan-Taiwan Dialogue 2018 Minutes", 21st June 2018, Taipei, Taiwan.
- July 2018: Report on The Second Japan – Philippines Strategic Dialogue prepared by Ms. Vindu Mai Chotani, Ph.D. Student, Graduate School of Public Policy, Tokyo University.
- May 2018: "Civilian Control "at Crisis"? – Perhaps Not, for the Case of the Field Sit-reps from SDF's South Sudan Mission" reported by Ippeita Nishida, Research Fellow, the Sasakawa Peace Foundation
- January 2018: "Fukushima, Genki?Project-Young Taiwanese volunteers introduce the facts on Fukushima's revival through documentary films-" reported by OGATA, Makoto, Former Chief of the Japan-Taiwan Exchange Association in Taipei
- December 2017: "Commemorating a Quarter Century of Dispatches of the JSDF's PKO Units: Challenges and Possibilities in the Post South Sudan" written by Takayuki Shoji, Lecturer, Nihon University
- November 2017: "19th CCP National Congress" written by Mr. Bonji Ohara, Senior Research Fellow, the Sasakawa Peace Fondation
- October 2017: "What is Japan's Role in the Indo-China border conflict?" written by Dr. NGAO,Satoru, Research Fellow, Institute for Future Engineering
- July 2017: "Overview of the Current Situation in Taiwan-" the Naturally Independent Generation" will affect the Taiwan"s politics-" written by Makoto Ogata MGE.(Ret.)
- June 2017: "Japan-U.S. Economic Dialogue" written by Mr.Takaaki Asano
- March 2017: "The Japan-Philippines Strategic Dialogue" written by Mr. Hideshi Tokuchi
- February, 2017: Current topic "The Importance of Japan's Security Role Under Trump" written by Dr. Satoru Nagao is posted on the SSDP website.
- December, 2016: Current topic "Widening Security Task: Will SDF do the Job?" written by Mr. Ippeita Nishida is posted on the SSDP website.
- July 2024, Research journal "Security Studies vol6 no2" (How Has South Korea Changed under the Yoon Suk-yeol Administration?) in English edition was published.
- April 2024, Research journal "Security Studies vol6 no1" (The Middle East in Turmoil) in English edition was published.
- December 2023, Research journal "Security Studies vol5 no4" (What is th Global South?) in English edition was published.
- September 2023, Research journal "Security Studies vol5 no3" (Hegemonic America: Where It's Headed) in English edition was published.
- June 2023,Research journal "Security Studies vol5 no2" (Nuclear Crisis Scenarios Facing Japan and the Outlook of Nuclear Deterrence and Arms Control and Disarmament) in English edition was published.
- March 2023,Research journal "Security Studies vol5 no1" (What Will Happen to European Security?―Facing the War in Ukraine) in English edition was published.
- January 2023, Research Jounal "Security Studies (vol 4 no 4)" - Defending Our Country – Defense Policy in a "New Cold War Era - was published.
- October 2022, Research Jounal "Security Studies (vol 4 no 3)" - Xi Jinping's China - Politics, Economy, Society and Diplomacy - was published.
- Jun 2022, Research Jounal "Security Studies (vol 4 no 2)" -The Russia-Ukraine War and Its Global Impact- was published.
- March 2022, Research Jounal "Security Studies (vol 4 no 1)"-What is Economic Security?- was published.
- December 2021, Research Jounal "Security Studies (vol 3 no 4)"-Korean Peninsula Situation- was published.
- September 2021, A research journal "Security Studies vol03 no03" -Asia's Security II- (English edition)
- June 2021, A research journal "Security Studies vol03 no02" -Asia's Security I- (English edition)
- March 2021: Research journal "Security Studies (vol3 no1) "- US Foreign Policy in the Biden Administration / The 2020 US Presidential Election and American Democracy -(English edition)
- December 2020: A research journal "Security Studies (vol2 no4) "- Normalize Japan-South Korea Relations trough Dialogues -(English edition)
- September 2020: A research journal "Security Studies (vol2 no3) "-The Novel Coronavirus and Security-(English edition)
- July 2020: A research journal "Security Studies (vol2 no2) - Middle East Situation and Japan's Security - " (English edition) was published
- May 2020: A research journal "Security Studies (vol2 no1) - Cyber, Space, Environment and Security - " March 2020 (English edition)
- February 2020, "A research journal "Security Studies (vol1 no4) " (English edition)"
- September 2019: A research journal "Security Studies (vol1 no3) " (English edition)
- August 2019: Korea-Japan Joint Seminar: FUTURE CONSENSUS DIALOGUE
- April 2019: "Security Studies (vol1 no2) April 2019"
- March 2019: A research journal "Security Studies vol1 no01" just published
- February 2019: The Denuclearization of North Korea and the Takeshima Issue
- December 2018: Former Vice Defense Minister Masahiro Akiyama's Memoirs (An Ad)
- November 2018: Participation in the Future Consensus Forum held in Beijing
- September 2018: "2018 Indo-Pacific Security Dialogue" reported by Masahiro Akiyama
- 2017 December: "The Butterfly Project-A possibility of showing a solution to the North Korea problem-"
- October 2017: Campaign on the problems with North Korea
- August 2017: A New Containment Policy Strategy
- June 2017: Korean peninsla
- March 2017: President Duterte
- February, 2017: Kazakhstan
- November, 2016: Participated in Astana Club 2016 held in Kazakhstan on November 14- 16, 2016.