China's Maritime Strategy and Responses of the United States and Japan
Former Commander in Chief, Self Defense Fleet
1. Current Status of the South China Sea: History and Background of China's Construction of Artificial Islands
1-1. Historical sketch
The history of territorial disputes over major islands and reefs in the South China Sea and China's construction of artificial islands are very complicated matters. The following is a simplified sketch of major events in chronological order.
- 1947: The Republic of China declared the eleven-dash line.
- 1953: The People's Republic of China removed two of the dashes of the nine-dash line in the Gulf of Tonkin on the west side of Hainan Island, considering the relationship with communist North Vietnam, which was at war with France.
The December 2014 US State Department report on the nine-dash line pointed out slight changes detected in the geographic location of the nine-dash line claimed by China and the absence of the Chinese government's official announcement on its geographic location. The US government clarified its position that China's claim lacked academic evidence endorsed by international law.
- 1974: The PRC established effective control over the Paracel Islands. It drove away South Vietnam in a Sino-Vietnamese naval conflict this year.
- 1988: In the Spratly Islands, a total of 13 features, each of which has an area suitable for human habitation of more than 0.02 km2 (equal to three soccer fields), had been under the effective control of North Vietnam (five features), the Philippines (six features), Malaysia (one feature), and Taiwan (one feature). As a result of a Sino-Vietnamese skirmish this year, the PRC acquired footholds in seven small reefs and rocks in the Spratly Islands.
- 1995: The PRC seized Mischief Reef that had been under the effective control of the Philippines.
It is undeniable that China, which had had no operational base in the Spratly Islands, acquired reefs --- petty as they were. Yet, none of them could be put into practical use. China has yet to obtain an operational base in the real sense of the word.
For China, the acquisition of an operational base in the Spratly Islands became a national goal after these incidents. But a direct military invasion against the 13 features in the Spratly Islands, which were under the effective control of other coastal states, would have been an unquestionably outrageous act incompatible with its position in the international community as a permanent member of the UN Security Council. Consequently, China attempted to fulfill its long-cherished desire by constructing artificial islands through reclaiming rocks and atolls that came under its effective control.
1-2. China's advancement to the Spratly Islands
China has established a large-scale naval base (the "Sanya Base") in the Yalong Bay of Sanya City, Hainan Island --- the strategic base for its South China Sea policy. In addition to a pier capable of berthing an aircraft carrier and escort ships, the Sanya Base can fully function as a submarine base. The base is confirmed to possess gates for entrance and exit, leading to tunnel-type underground facilities and special facilities for degaussing.
China reclaimed the area on both sides of Woody Island in the Paracel Islands, located about 700km south-southeast of Hainan Island, and constructed an airfield with a 2,400m runway and port facilities, thereby making the island the first key point of entry to the South China Sea. In 2015, the runway was extended to 2,700m by reclamation, and the port facilities were also renovated. Thus, Woody Island developed into the first relay point between Hainan Island and the Spratly Islands.
Although the Chinese military seized, as mentioned earlier, seven small rocks and reefs in the Spratly Islands in the southern waters of the South China Sea, it failed to secure a core base. To compensate for this failure, China constructed artificial islands in seven atolls located in the areas within a 200km-radius from Fiery Cross Atoll (from here referred to as Fiery Atoll). On the core atolls of Fiery, Subi, and Mischief emerged 3,000m runways and aviation and port facilities. The other four atolls serve as air and sea surveillance and defense posts around the three chief atolls. With the construction of these facilities on the seven atolls, a group of powerful military bases has appeared in the Spratly Islands, about 900km south of Woody Island. As a result, China's advance to the South China Sea has come to be supported by a north-south "line" connecting Woody island and the Spratly bases around Fiery Atoll, instead of the single "point" of Woody Island.
1-3. The impact of the creation of artificial island military bases on the security of the Indo-Pacific region
Since 2014, China has steadily promoted its advancement to the Spratly Islands through constructing the artificial islands mentioned above. China's advancement to the South China Sea has profoundly affected regional security. Its main impact on the political and economic front is as follows:
- (1) China's control of the waters inside the nine-dash line, a self-righteous assertion ignoring international norms, has disrupted and destroyed the maritime order that has so far sustained human prosperity.
- (2) China's success in "changing status quo by force" aided by the silence on the part of the Obama administration has helped China's authoritarian adventurism in political, economic, and military spheres.
- (3) Grave concerns are mounting about the prevalence of Chinese rules ignoring international law --- "freedom of navigation and free use of the seas," universal rights of humans, are subject to restrictions in the South China Sea by Chinese domestic laws.
On the military and security fronts, the following possible implications attract concerns.
- (1) The establishment of Chinese hegemony through China's coercive influence over South China Sea littoral states with overwhelming military power in the background.
- (2) Further intensification of the confrontation between the US and Chinese forces deployed in the South China Sea.
- (3) The intensification of the confrontation between China and the countries concerned over safe passage through and control rights over choke points located between the outer edge islands in the South China Sea --- choke points which connect the open sea and the South China Sea.
2. China's South China Sea Strategy: Its Challenge
2-1. Reclamation of Scarborough Reef and creation of the South China Sea Strategic Triangle
The remaining challenge for China associated with its South China Sea strategy is to turn Scarborough Reef into a military base. Located west of Luzon in the eastern South China Sea, the reef has been under the effective control of China since 2012. In 2016 China began surveying the reef. The Obama administration dispatched to the Philippines A-10 anti-tank attack aircraft deployed in South Korea; surveillance flights using the aircraft drove China to abandon its survey work. The strategic significance of a military base in Scarborough Reef is that the step would give rise to a military space in the shape of a triangle (the "strategic triangle in the South China Sea") with its sides ranging from 650 to 900km, connecting the said reef with the Spratly bases (around Fiery Reef) and Woody Island (Figure 1).
Source: Map made by the author
The strategic triangle in the South China Sea would not only strengthen China's operational basis in the entire South China Sea but would also bring about an extremely serious situation for the US Indo-Pacific Command, which have support bases nowhere else than in Singapore and Diego Garcia (British territory) in its vast area of responsibility from Okinawa to the east coast of Africa. Consequently, the primary task China has to address in the South China Sea will be the conversion of Scarborough Reef into a military base, which was frustrated by the Obama administration's hardline measures, and the completion of the strategic triangle there.
2-2. Geographical limitations that Chinese naval and air forces are facing: Control of choke points connecting the open ocean and the South China Sea
A geographic feature of the South China Sea, a semi-enclosed sea, is the existence of choke points as natural obstacles that connect the area with the Pacific and Indian Oceans. The South China Sea has three straits with a depth of 100 meters or more and navigable for large combatants and particularly submarines cruising underwater: (A) the sea area between Taiwan and the Philippines (waterways there are collectively called the "Bashi Strait"), (B) the sea area south of Mindanao Island (tentatively called the "Southern Mindanao Sea Area"), and (C) the Lombok Strait in Indonesia. These three straits constitute the choke points for maritime traffic in the South China Sea. When the Chinese Navy starts its open sea activities from the Sanya Base on Hainan Island, the first choke point to pass will be the Bashi Strait (A).
As for (B) and (C), besides choke points bordering the open sea, there are inland sea choke points consisting of island groups scattered in the Sulu Sea and the Celebes Sea between the Philippines and Indonesia. For the relationships between them, see Table 1 and Figure 2.
Source: Map made by the author
The Strait of Malacca (littoral states: Singapore, Malaysia, Indonesia, Thailand) and the Sunda Strait (Indonesia), both of which are important points for maritime traffic, will not diminish in significance in the future. Since the depth of both straits is just a little more than 20 meters, they will not be navigable for submarines sailing underwater. In addition, China's relationships with coastal states will likely invite some restrictions on the free use by Chinese naval forces of those straits in a tense or emergency situation. As an aside, super-large tankers with a draft of 20 meters or more currently bypass both choke points, navigating the southern waters of Mindanao Island via Lombok Strait.
To sum up, China, the world's most populous economic superpower, is also a top importer of resources and foodstuffs to maintain its economic and social activities. Therefore, the security of maritime traffic to sustain its distribution network has become a primary national goal. From this perspective, the control of choke points directly linking to the safety of surface traffic between the South China Sea --- a semi-enclosed sea for China --- and the open sea has emerged as a vital challenge.
3. Current Status and Challenges of the Chinese Navy
3-1. Current status
China's massive naval upgrade in recent years is remarkable both in quality and quantity. Table 2 shows China's navy strength in 2020 for each of the three out of the five theater commands of the PLA. The western and northern theater commands are excluded, because no naval forces belong to them.
The main sea area for each of the three fleets will be as follows. The Northern Theater Command Navy is responsible for the area north of a line connecting the Liaodong Peninsula and the Shandong Peninsula; the Eastern Theater Command Navy for the area from the East China Sea to the northeast of the South China Sea (the waters surrounding the Korean Peninsula, Japan, and Taiwan); and the Southern Theater Command Navy for the entire South China Sea excluding the area around Taiwan.
Source: THE MILITARY BALANCE 2021, IISS
Although the main forces of Chinese naval fleets still hold some old military equipment, they are, generally speaking, composed of new systems, and their capabilities are estimated to be high. On the other hand, mutual support between the different fleets seems to be characteristically difficult or extremely limited due to differences in geographical positions and missions of respective theater commands. Taking the invasion of Taiwan as an example, this operation would have to be implemented by the Eastern Theater Command Army and Air Forces and the East Sea Fleet. In the event of such an emergency, the South Sea Fleet would have to defend the Chinese artificial islands in the South China Sea; therefore, it would be hard for even the South Sea Fleet, the largest in the Chinese Navy, to move large forces to help, for example, the East Sea Fleet. Furthermore, choke point control operations would also become essential to prevent US naval forces from invading the South China Sea; this operation would impose on the Chinese Navy another burden comparable to the defense of artificial islands.
Another problem is that the Chinese Navy's fixed-wing and rotary-wing maritime patrol aircraft forces, which are instrumental to C4ISR activities, pivotal to all operations, are alarmingly vulnerable compared to other combat aircraft.
Besides, the operational concept associated with aircraft carriers and large amphibious warships that the Chinese Navy is assiduously developing is not free from problems. By and large, the development of forces materializes a military strategy or the concept of operations. The most vexing problem faced by the Chinese Navy is uncertainty whether its aircraft carriers (force for strategic strike) and large amphibious warships (force for power projection of marines into enemy-controlled areas) are suitable to China's strategic environment and geopolitics. In other words, the positions of these two forces in China's US strategy are ambiguous.
4. Estimated Capabilities of the Chinese Navy and the South China Sea
As examined earlier, the Chinese Navy has developed a high level of capabilities; but, simultaneously, it faces the problems mentioned in the previous section. Table 3 shows a comparison between the Chinese Navy and the US Navy's Pacific Fleet in terms of the amount of troops in 2030 (See Note).
The result of a comparison is as follows. The US Navy's Pacific Fleet is superior in terms of aircraft carrier capability. While the two navies' nuclear attack submarine forces are roughly balanced, the fact that the US Pacific Fleet possesses no conventional submarine suggests significant differences in their operational concepts for submarines. While the US Pacific Fleet is slightly superior regarding the number of large surface combatant ships, the Chinese Navy has an apparent advantage regarding surface combatant ships and small combat ships. The US Pacific Fleet rather outdoes the Chinese Navy so far as assault landing craft and large amphibious warships are concerned. But given the characteristics of the South China Sea and the waters surrounding Taiwan --- the Chinese Navy's chief area of responsibility --- and related equipment, the Chinese Navy is supposed to have developed considerable capabilities.
Note) The number in this table is developed by outline of JMSDF's force development methodology using articles carried in the extra issues of January 2020 (US Navy) and April 2020 (Chinese Navy) of the "Ships of the World" magazine as references.
As for the operational support ships not shown in Table 3, the US Pacific Fleet is supposed to have 20 refueling ships (12 for the Pacific) and 14 cargo and ammunition supply ships (8 for the Pacific), while the Chinese Navy has 14 supply ships. The Chinese Navy can be rated to have a high operational support capability. Yet, non-aligned China does not possess any forward logistics support base equipped with a wide range of repair functions and fuel and ammunition storages that the US Navy's Yokosuka and Sasebo bases have. This may be a crucial impediment to the Chinese Navy's operations when considering its operations throughout the Indo-Pacific.
Thus, the gap in strength between the US Navy and the Chinese Navy regarding operational support ships is still substantial. As far as the South China Sea and the defense of Chinese territories are concerned, however, this gap may have only a limited impact on the Chinese Navy. However, given that the Chinese Navy's national mission has extended to support Chinese national policies around the world, unquestionably, the defective operational support system of the Chinese Navy will, along with choke points, constitute a grave restrictive factor.
5. A2AD Strategy (Anti-Access/Area Denial) and the South China Sea
5-1. Significance of naval power in the A2AD strategy and its strategical targets: China's national goals and Chinese naval power
China's primary national goals are as below. China's security policy and massive naval power are the means to achieve them.
- (1) Maintain the authoritarian regime of the Communist Party of China.
- (2) Maintain state sovereignty and dignity: preserve territorial integrity and secure national interests in the EEZ
- (3) Maintain economic activities as the basis for state activities and for building a world first-class military power.
- (4) Build a maritime strategic nuclear capability on par with the United States.
- (5) Build a capability to exercise worldwide influence as a global power comparable to the United States.
The role of the Chinese Navy in achieving, first of all, (3) is to help secure stable maritime transportation. This is because both the stable import of raw materials and export of products by surface transportation is a prerequisite for China to maintain its economic activities. Meanwhile, China, which, boasting the world's second-largest GDP, is predicted by some research institutes to surpass the United States in GDP by the end of the 2020s, has now become the first continental superpower facing a resource self-sufficiency crisis. Consequently, stable maritime transportation is essential to the country.
Regarding (4), securing a second-strike capability against the United States is critical to China that aims to become a nation comparable to the United States in terms of security and military. The ability mentioned in (5) is "global reach," which is currently monopolized by the United States thanks to its overwhelming naval power. It is essential for China facing a global competition with the United States to build and acquire this capability. From the above, (3), (4), and (5) are the mission of the Chinese Navy.
Given the relationship between China's national goals and its navy as described above, both China's continued development of naval power and the expansion of its operational sea areas are a natural consequence. These are China's most important national policies rejecting any foreign meddling.
5-2. Focus of military capability development associated with the A2AD strategy
The A2AD strategy is the choice of the Chinese military that is rapidly developing its military capabilities but is still inferior to the US military in terms of overall combat capability. It, therefore, aims to build an ability to defeat US forces deployed in the Indo-Pacific region in an area as distant from the Chinese mainland as possible. The principal measures to this end include the following.
(1) Anti-ship ballistic missiles, hypersonic anti-ship missiles, and irregular-trajectory anti-ship missiles.
China's new array of anti-ship missiles includes anti-ship ballistic missiles, which even the US military does not possess and for which there can be limited countermeasures. The chief attack targets of those missiles may include: carrier battle groups, which are a symbol of US military power; amphibious warships, which are the key platform for Marine Corps power projection; and transport ships for the forward stockpiling of strategic materials that support the US military's ability to continue the war. Conventional anti-ship cruise missiles, submarines (torpedoes), and mines also constitute effective weapon systems to complicate and make US military operations more difficult.
(2) Domain denial against the US forces (neutralize the C4ISR functions)
This measure is to neutralize the domain awareness capability, which is what makes the US military the world's supreme combat group, and on which it highly depends. It is called "domain denial." Specifically, domain denial is not a direct attack on the political and military centers such as Washington DC and Hawaii, which are the brain of the US military, or on the front-line units that possess a strong strike power. Area denial is a capability to neutralize the C4ISR functions, which constitute the nerve system connecting US political and military centers. A direct attack on the political and military centers would be highly likely to provoke a full-scale counterattack by the US forces; a full-scale attack on the front-line units would escalate into an all-out clash between the two militaries. Even if the Chinese military won, such a clash would incur more irreparable damages than it could bear; in the worst case, it would risk losing the war. Therefore, the Chinese military is likely to adopt a basic strategy of practicing domain denial against the US military.
Taking these factors into account, the essence of China's domain denial can be said to be attacks against the C4ISR capability of the US military, most vulnerable and difficult to defend, thereby to destroy the US forces that have become sitting ducks by losing the C4ISR functions they depend on, while minimizing Chinese damages. Specific measures in this context may include electromagnetic pulse (EMP), the destruction of artificial satellites (ASAT), cyber-attacks, the demolition of undersea fiber-optic cable networks, etc. In short, domain denial is a measure to neutralize the US C4ISR capability by making full use of the different military maneuvers mentioned above, temporarily reverse the relative fighting power between US and Chinese forces, and gain a victory with minimal damage.
Operations employing measures described in (1) and (2) would launch in remote areas distant from mainland China. Those areas would include: the adjacent waters around the Ogasawara Islands in the Pacific Ocean, the areas outside the Indonesian archipelago in the South China Sea, and the waters expanding from the Bay of Bengal to the southern Indian Ocean. China would repeat attacks against US military units deployed in the Indo-Pacific region through various routes and continue attacks to reach the vicinity of the first island chain bordering the South and East China Seas. In that case, the Japan Maritime Self-Defense Force units operating in the Western Pacific to support US troops that would come directly from Hawaii along the main route for US military deployment would also become a target of the Chinese operations.
6. Responses of Japan and the United States to the South China Sea Issue
To deal with the South China Sea issue and China's A2AD strategy, Japan and the United States should promote closer cooperation. Among the principal measures to be taken by the two allies to this end may include the following.
6-1. Promotion of Japan-US and the QUAD cooperation regarding chokepoint control
Although the QUAD is a new element with enormous potential in our future policy toward China, we should not entertain excessive expectations. It is indisputable that Japan and the United States should continue thoughtful efforts.
One of the factors to be taken into consideration is China's geopolitical characteristics. China's three quadrants are bordered by the South and East China Seas, both of which are semi-enclosed sea areas. Japan and the United States should study strategic use of the constraints on China's maritime traffic imposed by the choke points between the islands bordering the two China Seas. They should promote QUAD cooperation among Japan, the United States, Australia, and India to control those choke points that constitute China's Achilles' heel. Besides, they should actively encourage cooperation and participation from European and ASEAN countries.
To be concrete, Japan and the United States should aim at the construction of a system to frustrate China's adventurism in the South China Sea through the coordination of an operational concept, following which the QUAD members should define their responsible areas: Japan should take up one from outside the Bashi Strait to the Philippine Sea; the United States should be responsible for the southern waters of Mindanao Island; Australia for the southern waters of the Lombok Strait; and India for the area outside the Malacca and Sunda Straits. If it is difficult for India to get involved, it is quite natural to instead consider establishing a coordinating system by Japan, the United States, and Australia.
6-2. Building a capability to deal with China's anti-ship ballistic missiles
In terms of equipment and tactics, consideration should be given to the development and deployment of equipment of the kind that will ensure a capability to deal with China's anti-ship ballistic missiles. If US carrier battle groups or other forces were severely damaged or perished in the Indo-Pacific region by China's anti-ship ballistic missiles, such development would jeopardize US leaders and American citizens' commitment to the Indo-Pacific region. This is precisely what China aims for with its A2AD strategy. Japan should, as a US ally, take the initiative in exploring this capability to address Chinese anti-ship ballistic missiles. A Japan-US joint development of such a capability would be preferable. Given, however, that Australia and India will also have to deal with the threat, collective efforts of QUAD member states would be an option.
6-3. Capacity building for maritime and air domain awareness in coastal countries around the South China Sea
In a sense, poor maritime and air domain awareness capability of the South China Sea coastal countries has facilitated China's unilateral expansion to the sea area and its assertive behavior there. Improving each country's capacity is an urgent task, but there is a limit to what they can do on their own to improve this particular capability. Therefore, the establishment by the neighboring countries --- under the support of Japan, the United States, or QUAD members --- of a mechanism for the collection and sharing of maritime and air domain information throughout the South China Sea would be significant.
Improving maritime and air domain awareness in the vast areas of the South China Sea, about 9.5 times the size of Japan's land areas, is anything but easy. If, for example, Japan and the United States, which enjoyed a monopoly on satellite surveillance data, provided properly processed information for the countries concerned, while those countries provided information on their aircraft and ships to a networked database, then an information-sharing mechanism would come into existence. Free access to the database by the participating countries would definitely improve their maritime and air domain awareness capabilities, thereby enabling them to make swift policy coordination and to decide on countermeasures in the event of an abnormal situation.
For the time being, Japan and the United States should help the regional countries with national interests in the South China Sea to improve their intelligence-gathering capabilities and also to help to establish a mechanism for collecting and sharing maritime and air domain information.
Source: Diagram made by the author
Not only over the South China Sea issue but also with various issues associated with the Indo-Pacific region, China's position is diametrically opposed to that of the United States. Well aware of its capabilities and anticipating a confrontation with the United States, China hates meddling in the South China Sea --- an "intra-regional" issue --- from the United States --- an "extra regional" power.
Today's various problems, including the South China Sea issue, should be solved primarily through non-military, political, and diplomatic efforts. However, China's stance in recent years has not complied with the expectations of the United States and Japan --- "If we contact her with restraint, China will eventually transform herself into a self-restrained country." On the contrary, taking advantage of our politeness and patience, China's activities, backed by its strong military power, are becoming more coercive and flagrantly disregard international norms.
To rectify the status quo where China's arrogant behavior likened to "spoiled brat gains" is allowed to prevail, it is essential to demonstrate to China the definite commitment of US forces based on the Japan-US alliance and the determination of South China Sea coastal states. Japan and the United States should also show their adamant determination "not to hesitate to use their capabilities" when necessary. Indisputably, the role that Japan should play in resolving the South China Sea issue is significant.
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- 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.
- 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.
- 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.