The war in the Strait of Hormuz is ending. The accounting for Taiwan has not yet begun.

Every resource consumed in the Gulf over the past weeks came from the same strategic account that underwrites deterrence in the Pacific. The aircraft carrier gap — no US carrier in the Pacific for more than two months — is not a logistical footnote. It is a signal. China read it. Taiwan felt it. The question now is what Beijing concludes about the durability of American commitments when a second crisis materializes in a different theater.

The United States has maintained a policy of strategic ambiguity toward Taiwan for more than four decades. It does not formally recognize Taiwan as an independent state. It does not provide a treaty guarantee equivalent to the commitments it has made to Japan, South Korea, or NATO allies. It does sell Taiwan defensive weapons under the Taiwan Relations Act, and it maintains unofficial relations through the American Institute in Taiwan. What it has not done is say explicitly and publicly whether it would use military force to defend Taiwan against a Chinese attack. This ambiguity has been the foundation of American cross-strait policy since 1979, and it has been under increasing strain as the military balance in the strait has shifted.