Behind the trade truce that has steadied markets between Washington and Beijing, Xi Jinping is testing something more ambitious: whether Donald Trump's transactional instincts can be turned into leverage over Taiwan. That is the read from the Wall Street Journal, which reports Beijing sees a "rare window" to convince Taipei that resistance to unification is futile.

The relationship that window sits inside is not calm by nature. Trump and Xi's recent engagement "saw tensions flare over AI, trade and Iran" even as both leaders "still seek stability," according to ABC News.

HYPOTHESIS: Xi is betting that a president who treats foreign policy as a series of transactions can be steered, through the value he places on trade calm, toward deprioritizing Taiwan's defense. Supporting this: the WSJ's own framing, that Xi sees the opening specifically because of Trump's dealmaking approach. Against this — or simply unconfirmed: neither report establishes what Trump has said or signaled about Taiwan itself, nor whether any such trade-off has been discussed.

This is a signal every US ally in the Indo-Pacific has to weigh. If Washington's commercial peace with Beijing comes at the expense of its security commitments to Taipei, Tokyo, Seoul, Manila and Canberra, each will want to know where its own defense guarantees rank against the next trade deal.

What to watch: whether Taiwan surfaces explicitly in future Trump-Xi contact, and whether US allies respond by hedging their own China policies or by seeking firmer, public reassurance from Washington.