US 'Strategic Ambiguity' on Taiwan: Enduring Despite Trump's Rhetoric?

Indications that the United States might abandon Taiwan are superficial, while substantive investments in capabilities to deter China continue apace. Under the long-standing policy of “strategic ambiguity,” the U.S. government has refused to state in advance whether it would send American forces to defend Taiwan against an attack from China. Some analysts argue that the Trump administration has rendered this policy ineffective by creating doubt that U.S. forces would intervene. For instance, columnist James Crabtree argued that based on “signals from Washington,” the United States is “inching more toward a position of nonintervention.” Multiple opinion polls also show a decrease in the belief among Taiwan’s people that the United States would come to their rescue since 2025. President Trump has repeatedly stated that Taiwan is less important than China, indefensible, and free-rides on U.S. defense. He has also expressed dissatisfaction with Taiwan allegedly stealing U.S. semiconductor industry and suggested responding to an invasion with economic sanctions. Furthermore, President Trump has avoided antagonizing Beijing over the Taiwan issue to facilitate economic dealings with China. The absence of mention of Taiwan in the Defense Secretary’s speech at the 2026 Shangri-La Dialogue and the removal of Taiwan’s name from the 2026 U.S. National Defense Strategy report also indicate this trend. However, the notion that strategic ambiguity has lost its usefulness is incorrect. Despite President Trump’s statements adverse to Taiwan, U.S. policy remains broadly supportive of Taipei. The Pentagon’s 2026 National Defense Strategy explicitly states the intention to “erect” and “sustain a strong denial defense along the First Island Chain,” which is meaningless without a U.S. intent to prevent China from absorbing Taiwan. While large arms sales have been delayed, they have not been canceled. This latest package of armaments includes systems appropriate for an attempted amphibious invasion by the People’s Liberation Army, such as HIMARS rockets and ATACMS missiles. U.S. military transits through the Taiwan Strait continue, and security cooperation with the Philippines and Japan has deepened. In particular, in northern Philippines, close to the Taiwan Strait, funding has been secured for U.S. military base infrastructure development, and joint U.S.-Japan exercises have expanded in scale. In Japan, the upgrade of U.S. Forces Japan to a joint force combat headquarters is progressing, and interoperability between the U.S. and Japan has improved. Contrary to superficial statements, substantive investments in U.S. capabilities to defend Taiwan are advancing, and strategic ambiguity is likely still effective. While President Biden’s remarks suggesting the possibility of explicit intervention and President Trump’s statements indicating non-intervention are contrasting, both fall under the umbrella of strategic ambiguity in that what will actually happen at the “crunch time” is unpredictable. The Chinese side will not be able to confidently assume that the United States would not intervene under a Trump administration. Source: The Diplomat Indonesia