Whether knowingly or not, these headlines promote a false narrative that China wants the world to believe. As an example of complex psychological warfare, the narrative aims to weaken the will of the Japanese public and the international community at large to defend Taiwan against a future Chinese attack. To prevent the weakening of deterrence, it is necessary to set the record straight regarding Japan’s policy towards Taiwan.

The 1972 Japan-China Joint Communiqué

The previously cited news reports mischaracterize a comment made by Prime Minister Takaichi, who told lawmakers, “The Japanese government’s basic position regarding Taiwan remains as stated in the 1972 Japan-China Joint Communiqué, and there has been no change to this position.” Specifically, she is referring to paragraph 3 of the 1972 communiqué: “The Government of the People’s Republic of China reiterates that Taiwan is an inalienable part of the territory of the People’s Republic of China. The Government of Japan fully understands and respects this stand of the Government of the People’s Republic of China, and it firmly maintains its stand under Article 8 of the Potsdam Proclamation.”

Importantly, the communiqué does not say that Japan “affirms,” “recognizes,” “endorses,” or “agrees with” the viewpoint of the People’s Republic of China (PRC), the communist regime that governs the country today. The communiqué states only that Japan “understands and respects” the PRC’s position.

When the United States established diplomatic relations with the PRC, it used similar language. Paragraph 7 of the 1979 U.S.-PRC Joint Communiqué states, “The Government of the United States of America acknowledges the Chinese position that there is but one China and Taiwan is part of China.” In this context, the word “acknowledges” performs the same function as the phrase “understands and respects” does in the 1972 Japan-China Joint Communiqué.

A key legal distinction lies in whether a government uses the word “recognize,” which then constitutes formal acceptance of a claim’s legal validity. Japan and the U.S. both stated that they “recognize” the PRC as the “sole legal government of China.” By recognizing the PRC as the sole legal government of China, Japan and the U.S. were adopting a “One China” policy.

A crucial aspect of the “one China” policy adopted by both Japan and the U.S. is that neither recognizes the PRC’s claim that Taiwan is a part of China; they merely take note of the PRC’s position. Where the American and Japanese policies differ is Japan’s insistence that it “firmly maintains” its stance under Article 8 of the 1945 Potsdam Declaration. Unpacking the meaning of Japan’s reaffirmation of Potsdam requires a review of multiple related declarations and treaties.

Shimonoseki to Cairo to Potsdam

Several treaties and declarations over the last century have shaped how the international community manages the Taiwan situation. Following the First Sino-Japanese War, China’s Qing government ceded, “to Japan in perpetuity and full sovereignty,” the islands of Taiwan and Penghu, as stated within the 1895 Treaty of Shimonoseki.

Fast forward to before the end of World War II, U.S. President Franklin D. Roosevelt, United Kingdom (UK) Prime Minister Winston Churchill, and Republic of China (ROC) President Chiang Kai-shek issued the 1943 Cairo Declaration, promising the return of territories like Taiwan and Manchuria to China.

At the time, the PRC did not exist. The ROC government replaced China’s Qing government in 1912 and continued to govern China until it was forced out by the Communists in 1949, at which point it took refuge in Taiwan, Penghu, and various other minor islands along the Chinese coast.

Days before the end of the war, the major allies of the U.S., the UK, and the Soviet Union held the Potsdam Conference and issued the Potsdam Declaration, preparing the terms of Japan’s surrender. Article 8 of the 1945 Potsdam Agreement states, “The terms of the Cairo Declaration shall be carried out and Japanese sovereignty shall be limited to the islands of Honshu, Hokkaido, Kyushu, Shikoku and such minor islands as we determine.”

Following the devastation from the atomic bombings, Japan signed the Instrument of Surrender at the end of World War II, agreeing to “carry out the provisions of the Potsdam Declaration in good faith” and “take whatever action may be required…for the purpose of giving effect to that Declaration.”  Japan transferred administrative control of Taiwan and Penghu to the ROC in 1945. Only a few years after the end of World War II, civil war broke out between the ROC and the PRC on mainland China, leaving Japan no opportunity to formally cede the islands to either rival government. Although the ROC continues to govern those islands to the present day, it never acquired legal sovereignty over them. This is why Taiwan’s status is still often described as “undetermined.”

An International Matter

The Cairo Declaration cannot be implemented as originally intended because the ROC no longer governs China, and even if it did, Japan no longer has the legal capacity to transfer sovereignty. In short, Japan has never recognized Taiwan as part of China. Since 1972, it has acknowledged the PRC’s position without endorsing it, while reaffirming its postwar obligation to comply with the terms of Potsdam and Cairo.

As part of re-establishing relationships with the allies, Japan renounced “all right, title, and claim” to Taiwan and Penghu without designating a recipient through the signing of the 1951 San Francisco Peace Treaty. Neither the ROC nor the PRC governments were invited to participate, nor were they even mentioned within the treaty.

The San Francisco Peace Treaty is the latest legal document to leave Taiwan’s status unresolved, transforming it into an international problem rather than a settled matter of China’s domestic sovereignty. Prime Minister Sanae Takaichi’s recent remarks reaffirmed Japan’s longstanding position, which is essentially a position of neutrality. Claims to the contrary misread the Japanese Prime Minister’s words and the legal history behind them.

Lindell Lucy is based in Honolulu, Hawaii. He holds a bachelor’s degree in philosophy from Stanford University and a master’s degree in international relations from the Harvard Extension School.

Not Part of China: An Explanation of Japan’s Taiwan Policy was originally published on Global Security Review.

The return of great power competition is especially concerning in the Indo-Pacific, with the expansion of Chinese military capabilities eroding the status quo of a regional rules-based order. An evolution in Chinese strategic objectives has created a shift among American defense planners and strategists, who now see China as the primary adversary of the United States. As written within the 2022 U.S. National Defense Strategy, “The [People’s Republic of China] PRC remains our most consequential strategic competitor for the coming decades… this conclusion [is based] on the PRC’s increasingly coercive actions to reshape the Indo-Pacific region and the international system to fit its authoritarian preferences, alongside a keen awareness of the PRC’s clearly stated intentions and the rapid modernization and expansion of its military.”

In the Cold War, Western strategists and planners spent most of their intellectual capital examining the challenges posed by the Soviet Union, in particular, the deterrence challenges posed by the Soviet nuclear arsenal. Policymakers subsequently developed defensive strategies and associated concepts including extended deterrence and force posturing in Europe and the role that the American industrial, economic, and military could play. Not least among these considerations was the role of U.S. extended deterrence commitments to its allies in NATO, particularly those allies on the front lines of the Cold War stand-off in Europe.

Put simply, extended deterrence refers to the stated policy to defend a foreign ally, including the use of nuclear weapons in said defense, as part of a mutual defense treaty. Many policies supported the credibility of U.S. extended deterrence commitments in Europe, to include public statements by American presidents, the presence of American military personnel abroad, and U.S. nuclear weapons forward deployed in Europe. Extended nuclear deterrence, along with the forward deployment of vast amounts of conventional power, was a central element of America’s defense of its European allies. One of the factors that strengthened the conventional defensive posture of Europe is that Europe enjoys a certain amount of strategic depth.

Strategic depth is defined as the space available within a territory to halt an adversary attack, execute a counterattack, and end the conflict on terms acceptable to the counterattacking party. During the Cold War, NATO enjoyed a regional depth which allowed not only for NATO forces to fall back to more defendable geographic features in the face of a conventional attack, such as the Rhine, the Rhone, or even the Pyrenees, but strategic depth within Europe allowed either side to carry out strikes on European soil without escalating or expanding the conflict to a nuclear war on each other’s homelands.

While this geography served U.S. and allied interests in the Cold War, the United States lacks a similar level of strategic depth in the Indo-Pacific as it confronts the prospects of a large-scale conflict with China. Much of the geography in a U.S.-China conflict would take place over the open ocean and skies of the Western Pacific. As such, there are few defendable terrain features such as rivers or mountain ranges behind which an actor can rest, reset, and prepare for a counterattack.

Just as importantly, a battlefield in the Western Pacific means that there are fewer options for the distribution of basing. American and allied bases would therefore have to generate combat operations from a limited number of high priority bases in a conflict. The lack of defensible features and small number of high-value bases is in many ways the opposite condition of what the United States and its NATO allies experienced in the Cold War.

In contrast, China has enormous strategic depth due to its ability to generate combat power from any number of bases, launch sites, or ports along its enormous Pacific coast and its deep hinterland. In the Western Pacific, U.S. allies and partners are dispersed and in some cases thousands of miles away from each other, with neutral and non-aligned states dotted in between. As a result of the United States’ limited number of bases, owing to the scarcity of permanent land features in the Western Pacific, China can focus on a small number of critical targets to diminish American and allied combat effectiveness.

Further, the limited number of in theater bases increases the demands and stress on an aerial fleet and the logistics involved in keeping U.S. forces adequately supplied. It also makes for significantly longer ship and submarine transit times to and from more distant resupply points. Already in 2015 there was the issue of the rate at which missiles can be launched.

To counter China, the number and availability of sensor resources that can be devoted to integrated air and missile defense systems versus other missions must increase given the vertical proliferation of such systems. Also, the capacity of combat logistics forces needed to cycle ammunition ships between rear bases and forward reloading areas, maintain long-range, high-capacity carrier-based aerial refueling, and to sustain different operational concepts over prolonged periods of conflict must be expanded.

The United States, Japan, and Australia should consider pre-positioning substantial amounts of military capabilities directly relevant to deterrence operations, such as missile defense capabilities, fuel, and conventional munitions, in each other’s territories to create targeting dilemmas for China. Doing so would not only enhance knowledge of deterrence methods and challenges between allies in theater that are vastly different from Western Europe during the Cold War but also create existential misery for PRC defense planners.

Regardless of personal preference, complex issues related to nuclear strategy are now central in the Indo-Pacific region. The U.S. and its allies must deliberately evaluate the profound responsibilities that come with being members of a nuclear alliance.

Robert Peters is a Senior Research Fellow for Strategic Deterrence in The Heritage Foundation’s Allison Center for National Security. Prior to joining Heritage, Peters served as the lead strategist at the Defense Threat Reduction Agency, where he oversaw the office that developed the Agency’s five-year strategy, conducted the Agency’s research and tabletop exercise program, and executed Agency-level program evaluations. Dr. Christine Leah is a Fellow at the US National Institute for Deterrence Studies and has worked on nuclear issues at Yale, MIT, and RAND and in London, Singapore, and Canberra. She is the author of The Consequences of American Nuclear Disarmament and Australia and the Bomb. Views expressed by the author’s are their own.

Extended Deterrence and Strategic Depth was originally published on Global Security Review.