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1. Peninsula Plus: Enhancing U.S.–South Korea Alliance Cooperation on China, Multilateralism, and Military and Security Technologies

Author:
Jacob Stokes and Joshua Fitt
Publication Date:
03-2023
Content Type:
Working Paper
Institution:
Center for a New American Security (CNAS)
Abstract:
The United States–Republic of Korea (ROK or South Korea) alliance has entered a critical phase. In 2023, the two countries will commemorate the 70th anniversary of signing their bilateral mutual defense treaty. This year also marks the first full year under national leaders President Joe Biden and President Yoon Suk Yeol. After several challenging years in the two countries’ relationship, ties are improving. Better alliance relations have, unfortunately, coincided with a deterioration in the regional and global security environment, specifically due to threats from North Korea, China, and Russia. This report examines the U.S.-ROK alliance as it adapts to the new regional context by exploring how the United States and South Korea can sustain and deepen their relationship in three vital policy areas: coordination on China, alignment in minilateral and multilateral settings, and defense technology collaboration. Perhaps the biggest shift in alliance priorities in recent years has been the growing importance of the China challenge. During Chinese Communist Party General Secretary Xi Jinping’s decade in power, Beijing has adopted a more muscular foreign policy. Both the United States and South Korea have reshaped their approaches toward China in response. ROK concerns about China have grown as Beijing shields Pyongyang and acts aggressively elsewhere in the region, including toward Taiwan. But South Korea’s approach to China will continue to differ from that of the United States. The allies have divergent preferences regarding the speed, manner, and degree of partial decoupling with China. Moreover, South Korea’s deep trade ties with China will continue to make it vulnerable to Chinese political and economic coercion.
Topic:
Security, Science and Technology, Alliance, Multilateralism, Cooperation, and Military
Political Geography:
China, Asia, South Korea, and United States of America

2. Strengthening the Shield: Japan’s Defense Transformation and the U.S.-Japan Alliance

Author:
Jacob Stokes, Lisa Curtis, Joshua Fitt, Joseph I. Grimm, and Rebecca Wittner
Publication Date:
09-2023
Content Type:
Special Report
Institution:
Center for a New American Security (CNAS)
Abstract:
In December 2022, Japan’s government released three major strategic documents: the National Security Strategy, the National Defense Strategy, and the Defense Buildup Program. Although Japan has made incremental changes to its security policies and capabilities over the last decade, the new documents mark a notable shift in Japan’s approach to strengthening its defense. The documents reflect Tokyo’s assessment of the rising threats that could challenge Japan’s security and signal Japan’s commitment to build the military capabilities necessary to meet them. This report examines Tokyo’s defense transformation and assesses its implications for the U.S.-Japan alliance and Washington’s strategy toward the Indo-Pacific. Japan is “fundamentally reinforcing” its national security and defense policies to cope with its increasingly severe security environment. The military threats posed by China, North Korea, and Russia have been growing steadily for years but appear to be peaking simultaneously. Tensions between Japan and China have occasionally flared in the five decades since they normalized diplomatic relations. But those tensions have reached new heights since 2012, when China began to regularly contest Japan’s administration of the Senkaku/Diaoyu Islands. By August 2022, Beijing fired five ballistic missiles into Japan’s exclusive economic zone during China’s live-fire military exercises after then-U.S. House Speaker Nancy Pelosi’s visit to Taiwan. The aim of the missile launches was to signal there would be consequences for Japan if Tokyo were to intervene in a Taiwan contingency. Meanwhile, North Korea’s unprecedented rate of missile testing since 2022 and Russia’s brutal war against Ukraine have deepened Japanese concerns about the potential for the use of force in the Indo-Pacific. Japan is taking steps to improve its ability to defend itself and deter an invasion, including through changes to security funding and policy. Tokyo has announced plans to increase its defense spending by 65 percent over the next five years, acquire standoff weapons that could be used for a counterstrike mission, and adopt an “active cyber defense” posture. Japan has clarified the roles of its military, the Self-Defense Forces (SDF), and Coast Guard in the event of an attack; committed to establishing a permanent Joint Headquarters for SDF operations; and created a program for supplying partner militaries with security assistance. Effectively employing counterstrike and active cyber defense, however, will require a clearer delineation of the legal authorities for their use as well as the overall military strategies that they would support. In addition, pressure from the Japanese public over tax hikes required to pay for the defense spending increase amid other fiscal pressures could pose a barrier to implementation. Japan plans to strengthen the SDF through boosting readiness and resilience of current forces, acquiring counterstrike and other advanced capabilities, and improving force posture and mobility. The SDF has been plagued by a chronic lack of munitions and other supplies, and most of its facilities do not meet its own standards for resilience against enemy attack. Addressing these shortfalls is essential, though these types of programs often lose out to more high-profile programs. For its counterstrike mission, Japan has announced it will buy U.S.-made Tomahawk cruise missiles. This initial purchase will provide a stopgap until Japan is able to produce its own longer-range missiles later in the decade. Japan has also announced it will pursue new capabilities in uncrewed systems, space, cyber, and artificial intelligence (AI). But fulfilling these ambitions will be challenging given some short-falls in Japan’s technology base and SDF personnel. Lastly, the SDF is grappling with how to expand its forces in Japan’s southwest islands while maintaining a sufficient presence throughout the country to deter aggression from a range of possible threats. Next, Japan’s strategy emphasizes enhancing security partnerships regionally and across the globe. Japan has recently stepped up its defense cooperation with several Indo-Pacific and European countries. With Australia, Japan is building on a 10-year effort to deepen strategic cooperation, a process that culminated in January 2022 with the completion of a Reciprocal Access Agreement. New bilateral strategic cooperation includes enhancing interoperability between the SDF and the Australian military, increasing rotational SDF training deployments to Australia, and announcing a new joint security declaration that commits to a combined response to military contingencies. Similarly, Japan has long recognized the strategic importance of India and continues to build on the Japan-India relationship through maritime security cooperation, a new joint fighter exercise, and operationalization of their Acquisition and Cross-Servicing Agreement. Japan and the Philippines are also expanding their defense ties through humanitarian assistance and disaster relief training exercises and an important emerging trilateral security relationship with the United States. Over the past year, Japan and South Korea have made significant strides to repair relations since the latest downturn that began in 2018. This will be an incremental process, but there has been progress in the form of leader-level summits and ministerial dialogues, plans to cooperate on sharing data about North Korean missiles, and new trilateral ballistic missile and anti-submarine drills with the United States. Japan also is building defense connections and relationships with European nations. It is pursuing the development of a sixth-generation fighter jet with the U.K. and Italy and, particularly since the full-scale Russian invasion of Ukraine, has sought to deepen strategic ties with NATO. These comprehensive changes to Japan’s defense policies will necessarily reshape the military and security pillars of the U.S.-Japan alliance. Tokyo’s acquisition of counterstrike capabilities will position Japan to potentially take on some offensive tasks, even while retaining its primarily defensive orientation. This also has implications for alliance contingency planning related to defending Japan directly as well as around Taiwan, the Korean Peninsula, and the South China Sea. However, increased joint planning will require updates to alliance command and control (C2) and information-sharing mechanisms. Additionally, given resource constraints, the alliance would be well-served to find additional opportunities for military technology sharing, codevelopment, and coproduction, such as through Japanese involvement in the second pillar of the AUKUS (Australia-United Kingdom-United States) partnership focused on cooperation on advanced capabilities and defense technology innovation. And the alliance must take steps to improve force posture and readiness, including through enhancing base resiliency and increasing munitions stockpiles. Japan’s fundamental transformation of its defense posture will mean significant changes for the U.S.-Japan alliance. The United States must adapt its approach to alliance coordination to maximize new opportunities and manage any new challenges. In this context, U.S. policymakers should: Prepare to update the alliance, while recognizing that Japan’s new defense policies will require significant time, resources, and political will to implement. Stay closely aligned with Tokyo on the threat land- scape as well as engagement with geopolitical competitors, especially China. Integrate U.S.-Japan command and control structures. Create an alliance readiness, resilience, and posture implementation task force. Deepen planning for contingencies and bolster extended deterrence. Create a road map for expanding defense technology cooperation concurrently with Japan’s implementation of specific improvements to its information security practices and infrastructure. Innovate operational concepts for uncrewed systems and counterstrike capabilities. Leverage the U.S.-Japan alliance as a hub for minilateral and multilateral security engagement. Build U.S.-Japan alliance mechanisms that will expand cooperation on cyber security and defense. Stand up an alliance dialogue on military personnel issues.
Topic:
Defense Policy, National Security, Bilateral Relations, and Alliance
Political Geography:
Japan, Asia, and United States of America

3. Digital Allies: Deepening U.S.–South Korea Cooperation on Technology and Innovation

Author:
Jacob Stokes, Alexander Sullivan, and Joshua Fitt
Publication Date:
03-2022
Content Type:
Special Report
Institution:
Center for a New American Security (CNAS)
Abstract:
Rapid advances in digital and other emerging technologies have become a defining feature of international geopolitics and geoeconomics in the 21st century. This report explores how the United States and South Korea can broaden and deepen their alliance through expanded cooperation on issues related to technology and innovation. Despite the continued centrality of traditional security threats—especially those emanating from North Korea—both the United States and South Korea are seeking to deepen and broaden alliance cooperation to address a larger set of shared challenges and opportunities. To that end, both capitals have noted the increasing importance of key technologies for economic growth as well as for security and governance. The two countries are at the very beginning of defining how an augmented alliance will approach technology coordination, but they have decades of economic and trade ties on which to build. Technology issues are central to the policy platforms of both U.S. President Joe Biden’s and South Korean President Moon Jae-in’s administrations and will continue to be important under future administrations in both countries. In addition to examining general consultative frameworks, enhancing U.S.-South Korea technology cooperation requires assessing the state of bilateral interactions sector by sector and issue by issue. The two countries occupy leading roles in many foundational technology ecosystems within the evolving global economy, such as semiconductors, telecommunications, and advanced batteries. In emerging fields such as artificial intelligence and quantum computing, U.S.-Republic of Korea (ROK) collaboration harbors the potential not only to raise living standards through technological breakthroughs but also to promote governance norms in accordance with liberal democratic principles. Potential opportunities for Washington and Seoul to deepen cooperation extend beyond the bilateral context to regional and global affairs, through coordination of the U.S. Indo-Pacific Strategy and South Korea’s New Southern Policy or its successor under the new president-elect, Yoon Suk-yeol. Rapid technological growth and digitization in Indo-Pacific countries, particularly those of Southeast Asia, present both immense economic opportunity and a range of governance challenges. The United States and South Korea have an important opportunity to ensure that technological development promotes a free, open, secure, and prosperous region. Taken together, the strategic rationales for enhancing U.S.-South Korea cooperation on technology issues are strong. Meaningful efforts to that end are already underway, but more can and should be done to deepen alliance coordination. Policymakers in Washington and Seoul should consider recommendations spanning the areas of foreign policy and international organizations, coordination on key technologies, trade and investment, and digital governance and domestic policy. Doing so will enable the alliance to meet the challenges and seize the opportunities presented by the current regional and global landscape.
Topic:
International Cooperation, Science and Technology, Bilateral Relations, Alliance, and Innovation
Political Geography:
Asia, South Korea, North America, and United States of America