The Meaning of Biden’s Big Shift on Taiwan

While U.S. allies did not expect Washington to use military force to repel Russia’s invasion of Ukraine, they assume the United States would defend Taiwan. If the United States stood on the sidelines, this would likely lead its allies to lose confidence in U.S. security guarantees and either develop nuclear weapons of their own or accommodate China’s strategic interests.

In addition to the stakes, Beijing’s growing assertiveness calls for a change in U.S. policy. Over the past two decades, China has pursued a rapid military modernization, focusing above all on developing capabilities that would allow it to defeat Taiwan and prevent the United States from coming to Taiwan’s aid. China has also grown bolder and its tolerance for risk has increased, as it militarized the South China Sea, crushed democracy in Hong Kong, fought with India alongside their disputed border, and economically coerced countries in Asia and Europe. Beijing is also putting more pressure on Taipei, redoubling its efforts to isolate Taiwan internationally, punishing it economically, and increasing its military activities near the island.

Russia’s invasion of Ukraine also risks undermining deterrence, thus adding to the case for strategic clarity. From the outset, the United States ruled out intervening militarily on Ukraine’s behalf, with President Biden likening doing so to “a third world war.” Chinese policymakers may conclude that Russia’s nuclear arsenal effectively deterred the United States, which would be unwilling to go to war with a nuclear power over Taiwan. In addition, while the United States has levied massive sanctions on Russia, those measures failed to alter Putin’s calculus and the threat of sanctions alone will not prevent Xi from attacking Taiwan. In fact, China is likely confident that, given its centrality to the global economy, countries would be less willing to sanction it, as doing so could inflict just as much damage on their own economies as China’s.

U.S. policy needs to adjust to these changing circumstances, making clear to China that it has the resolve to use force to defeat Chinese aggression against Taiwan. But a change in declaratory policy alone is not enough – equally important is making sure the United States has the capacity to come to Taiwan’s defense at a reasonable cost. The United States and Taiwan need to study Ukraine’s defense against Russia, thinking through how China is likely to alter its operational plans and what they can do to bolster Taiwan’s defenses. This should entail Taiwan prioritizing portable air defense systems, drones, anti-tank and anti-ship missiles, and sea mines. Taiwan must also improve its reserve force, establish new territorial defense forces, and more broadly plan for mobilizing its entire society. The United States should prioritize coordinating with Japan and building toward a joint operational plan to come to Taiwan’s defense. It should also invest in military capabilities that would be most relevant to a Taiwan contingency and shift military resources to Asia.

At the same time, when moving to a position of strategic clarity, the United States should emphasize that it is doing so within the context of its one-China policy and offer reassurances that it does not support Taiwanese independence. In other words, the ends of U.S. policy would not change.

Some may argue that President Biden merely misspoke, unaware of the significance of what he was saying. But two decades ago, when President George W. Bush said the United States would do “whatever it took” to defend Taiwan, then-senator Biden castigated Bush for his “inattention to detail” and noted “the United States has not been obligated to defend Taiwan.” In addition, this is the third time that President Biden has dispensed with strategic ambiguity, and one can assume that after the first two times he was briefed on U.S. policy and made aware of the implications of his statements.

Attempts to walk back President Biden’s comments are both damaging and ineffective. Such efforts risk sowing confusion among U.S. allies and partners and building a narrative of dysfunction. In addition, if China were to use force against Taiwan, the decision of whether to come to Taiwan’s defense rests on the president’s shoulders alone. At this point, it is clear what President Biden really thinks and how he would respond. It is time for his administration to ensure the United States has the capability to do so.

David Sacks is Research Fellow at CFR.This article is published courtesy of the Council on Foreign Relations (CFR).