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Begin New Search Political Geography Japan Author Seth Cropsey

1. The U.S.-Japan Alliance: Significance and Role

Author:
Seth Cropsey and Jun Isomura
Publication Date:
04-2018
Content Type:
Special Report
Institution:
Hudson Institute
Abstract:
The alliance between the United States and Japan, born at the end of the Second World War, continues to play a vital role in the defense of the Japanese Islands and in U.S. regional Indo-Pacific strategy. The People’s Republic of China is challenging the U.S.-Japan alliance in the Indo-Pacific Region. China has greatly increased its defense budget, expanded and modernized its navy, and increased operations that challenge the region’s status quo—including in the East China Sea, where the PRC regularly violates Japan’s territorial waters, in the vicinity of the contested Senkaku Islands. China’s belligerent behavior poses a strategic threat to Japan’s domestic security and will continue to encroach on Japanese and U.S. interests in the region. The PRC’s threatening behavior and an aggressive nuclear-armed North Korea are testing the U.S.-Japan bilateral alliance as it has not been tested since the Cold War. The United States continues to serve as a guarantor of Japan’s national security. The U.S. military has stationed naval, air force, army, and amphibious forces in Japan as a strategic deterrent against would be aggressors. With U.S. forces in Japan as a deterrent, Japan has developed a pacifist strategy based on non-aggression and security limited to self-defense. The Japanese constitution’s Article 9 enshrined this principle into law. Japan’s regional strategy has paid dividends through political, diplomatic, and economic engagement with Indo-Pacific countries. This includes Japan’s increasing defensive security cooperation in the region. The Japanese Self-Defense Forces have participated alongside the United States and such neighboring states as South Korea in bilateral and multilateral exercises that build both capabilities and security relationships. Beyond diplomatic and soft power engagement, Japan has in recent years increased its defensive capabilities. To counter Chinese and North Korean missile threats, Japan has worked with the United States to build an advanced ballistic missile defense. In addition, the Japanese Self-Defense Forces have acquired medium-range cruise missiles for its air forces to deter potential adversaries from launching attacks. Tokyo has expanded its defense to counter challenges below the threshold of war against Japan’s outlying islands. Improved intelligence, surveillance, and reconnaissance and the establishment of amphibious forces contribute to this defense.
Topic:
International Relations, Defense Policy, National Security, Bilateral Relations, and Alliance
Political Geography:
Japan, China, Asia, North America, and United States of America

2. U.S.-Japan Cooperation on Strategic Island Defense

Author:
Seth Cropsey and Jun Isomura
Publication Date:
09-2018
Content Type:
Special Report
Institution:
Hudson Institute
Abstract:
Japan’s southwest island chain, an archipelago of 1,200 kilometers (750 miles), is known as the Ryukyu Islands. Along with Taiwan and the Philippines, it comprises what the People’s Republic of China (PRC) perceives as the first of three strategic island chains. To China, these island chains represent geostrategic impediments to Pacific Ocean expansion and power projection, which its adversaries—including the United States and Japan—might use to counter Chinese aggression in a conflict. In particular, the first island chain represents the first geostrategic hurdle for the Chinese People’s Liberation Army Navy (PLAN) as it seeks access to sea lanes in the Pacific and Indian Oceans. Two of China’s three PLAN fleet bases are located on the East China Sea. To reach the South China Sea and the Pacific, ships or aircraft from these bases must transit through the choke points of the Taiwan or Miyako Straits, the latter passage through the Ryukyus. Japan’s southwest islands pose a significant strategic and operational challenge for China, and thus their defense is equally strategically and operationally important for Japan. China, to achieve its goal of global superpower status by the mid-twenty-first century, has sought to contest and change the status quo across the Indo-Pacific region by constructing and arming islands from the South China Sea to the East China Sea and beyond. As part of this effort, the PRC has expanded and modernized its armed forces. The immediate objective is to neutralize what Chinese rulers regard as the threat of the first island chain. This has included building a larger and more advanced surface fleet and air force, including the country’s first aircraft carrier, as well as advanced destroyers and more advanced aircraft. It also involves developing and expanding China’s amphibious assault capabilities by means of a larger and more capable PLAN Marine Corps, along with more amphibious warships, amphibious aircraft, and amphibious assault vehicles. In the PRC’s crosshairs is not only Taiwan, the keystone of the first island chain and a vigorous democracy, but also the Senkaku Islands of Japan, whose sovereignty the PRC contests, and the Ryukyu Islands. Any Chinese invasion of Taiwan or military attempt to assert sovereignty over the Senkaku Islands runs the risk of drawing the United States and Japan into a conflict with the PRC. The U.S.-Japan alliance obliges the United States to defend Japan and its sovereign islands. Both countries maintain a security presence in the Ryukyus, principally on the island of Okinawa, where the U.S. Marine Corps (USMC) maintains a nineteen-thousand-strong force, alongside U.S. Air Force, Army, and Navy units. The Japanese Self-Defense Forces (JSDF) and Coast Guard also maintain ground, maritime, and aviation elements on Okinawa and conduct regular air and sea patrols throughout Japan’s southwest islands. In keeping with constitutional restrictions that limit Japan’s security forces to self-defense, Japan’s Ministry of Defense has also recently sought to bolster the country’s amphibious capabilities to counter potential Chinese aggression. In the face of a rising PRC challenge, the United States and Japan have in recent years streamlined and strengthened their security cooperation. This has included participation in bilateral and multilateral exercises to improve interoperability at tactical and operational levels. In addition, the 2015 creation of an alliance coordination mechanism (ACM) provides guidelines for the U.S. and Japanese governments to coordinate defense cooperation, including the defense of Japan’s outlying islands, at a policy level. However, the two countries still lack an integrated means—at the bilateral or multilateral level—to coordinate operations in response to regional contingencies.
Topic:
Defense Policy, International Cooperation, Military Strategy, Bilateral Relations, and Alliance
Political Geography:
Japan, Asia-Pacific, and United States of America