Japan’s Coast Guard and Maritime Self-Defense Force: Cooperation among Siblings
Coping with “gray zone” situations has in recent years become the core security challenge for Japan. Since September 2012, Beijing has been challenging Japan’s sovereign control of the Senkaku Islands by regularly sending law-enforcement vessels into Japanese territorial waters and contiguous zones.
Beijing sends civilian or paramilitary forces to change facts on the ground while daring the targeted country to use force to stop these activities. These incursions, which do not amount to an armed attack, are blurring the line between crime and defense, law enforcement, and military activities.
In August, an armada of 230 Chinese fishing boats, accompanied by 7 Chinese Coast Guard (CCG) vessels, was spotted near the Senkakus. This could have led to a nightmare scenario for Tokyo in which the disputed islands are seized by Chinese armed fishermen. Such a situation could quickly escalate with the arrest of the intruders at sea by the Japan Coast Guard (JCG) or on land by the police forces, followed by the deployment of Chinese naval vessels to rescue its citizens. The Japan Maritime Self-Defense Forces (JMSDF) could then be deployed on site, on the request of the Cabinet Office, only with limited authorization to use force (law-enforcement powers). This chain of events would create a tense standoff between JMSDF and Chinese naval vessels with a high risk of developing into a military incident. The dilemma for Japan would be to choose between being the first side to use force to displace the intruders and leaving them alone with the risk of Beijing claiming actual control of the islands. In this kind of scenario, a clear division of roles between the JCG and JMSDF, with the early involvement of the latter, would ensure a greater deterrence effect and a swifter and consistent response in case of an intrusion.
This MAP Analysis is a preview of the author’s forthcoming article in the January issue of Asia Policy.
Available in:
Regions and themes
Share
Download the full analysis
This page contains only a summary of our work. If you would like to have access to all the information from our research on the subject, you can download the full version in PDF format.
Japan’s Coast Guard and Maritime Self-Defense Force: Cooperation among Siblings
Related centers and programs
Discover our other research centers and programsFind out more
Discover all our analysesTaiwan’s Rising Space Program: Building Up Industry, Supporting National Security
Taiwan, known for its leadership in semiconductors and information and communications technology (ICT), is now making significant strides in the space industry. While historically modest, Taiwan’s space program has seen a transformation since 2020, driven by President Tsai Ing-wen’s commitment to expanding the country’s space capabilities. Key milestones include the passage of the Space Development Act and the creation of the Taiwan Space Agency (TASA), which has bolstered the resources and visibility of Taiwan’s space ambitions.
AI and Technical Standardization in China and the EU: Diverging priorities and the need for common ground
Given the highly disruptive potential of AI, global cooperation on AI safety and governance is imperative, and yet the deeply transformational potential of AI also ensures that a high level of competition and systemic rivalry is likely unavoidable. How can the EU best manage its complex relationship with China in the field of AI so as to ensure a necessary level of cooperation in spite of competition and rivalry?
China’s Quest for a Quantum Leap
The global race to harness quantum science is intensifying. Recognizing the strategic potential of quantum technology for economic, military, and scientific advancement, China is focusing on quantum breakthroughs as a way to shift the balance of power, especially in its competition with the United States. President Xi Jinping has emphasized the importance of scientific innovation, particularly in quantum fields, to fuel national development and ensure security.
Taiwan's Energy Supply: The Achilles Heel of National Security
Making Taiwan a “dead island” through “a blockade” and “disruption of energy supplies” leading to an “economic collapse.” This is how Colonel Zhang Chi of the People’s Liberation Army and professor at the National Defense University in Beijing described the objective of the Chinese military exercises in May 2024, following the inauguration of Taiwan’s new president, Lai Ching-te. Similar to the exercises that took place after Nancy Pelosi’s visit to Taipei in August 2022, China designated exercise zones facing Taiwan’s main ports, effectively simulating a military embargo on Taiwan. These maneuvers illustrate Beijing’s growing pressure on the island, which it aims to conquer, and push Taiwan to question its resilience capacity.