The short answer is: not yet. The longer answer is more alarming.

Donald Trump returned from his two-day state visit to Beijing without having formally altered U.S. policy on Taiwan. Secretary of State Marco Rubio said the right things. The One China framework nominally remains intact. Taiwan’s foreign ministry issued measured statements about maintaining good communication with Washington. Taipei did not panic.

None of that is reassuring.

What Trump actually said — aboard Air Force One, the diplomatic equivalent of speaking off the cuff while the cameras are still rolling — was more telling than any official readout. He declined to say whether the United States would defend Taiwan if China attacked. When pressed, he noted that Xi Jinping had asked him the same question earlier that day, and that he refused to answer then too. He described Taiwan as something that should “cool it a little bit.” He called a pending $14 billion arms sale “a very good negotiating chip” — meaning he is prepared to trade Taiwan’s defense capacity for something else on his deal sheet. He said the last thing the United States needs right now is “a war 9,500 miles away.” He said it twice.

The question of when — not whether — China might attempt military action against Taiwan has become the organizing analytical question of western Pacific security. It is asked because Chinese leaders, most explicitly Xi Jinping, have provided a series of statements and deadlines that create at least a public framework for reading Chinese intentions. That framework is ambiguous enough that analysts reach different conclusions from the same data, which is itself informative: ambiguity about the timeline is probably a feature of Chinese strategy rather than a gap in its communication.