China's foreign minister, Wang Yi, told the US secretary of state, Marco Rubio, to handle Taiwan with "utmost caution" in a phone call on Tuesday, the first contact between the two governments' senior diplomats since President Donald Trump visited Beijing in May.

The account of what was said depends on who describes it. China's foreign ministry, quoted by the state news agency Xinhua, called the call "positive and constructive" and said Wang had warned that mishandling the Taiwan question could push relations into "an extremely dangerous situation." Bloomberg rendered Wang's phrasing as a call for "extra prudence."

The US State Department's readout, released on Wednesday, did not mention Taiwan. It said Rubio "discussed the importance of building a constructive relationship of strategic stability based on fairness and reciprocity, as outlined by President Trump." The two versions describe the same call and choose to record different parts of it.

Taiwan governs itself. Beijing claims it as Chinese territory and has not ruled out taking it by force; Washington keeps unofficial ties and sells the island weapons while stopping short of recognising it as independent. Tuesday's call was the first at that level since Trump's Beijing summit with Xi Jinping in May, which both governments described at the time as a step toward stability.

For Australia, the exchange matters because so much of its own defence planning now rests on the assumption that the United States will deter the scenario Wang was warning about. The 2026 National Defence Strategy names China as the main driver of a deteriorating regional security situation and casts the US alliance, and the AUKUS submarine program, as the answer. A warmer or cooler line between Washington and Beijing moves Canberra's position without Canberra being in the room.

No new meeting was announced. Both governments say they want stability, and both have described this week's call in their own terms. What was actually agreed on Taiwan, if anything, neither has said.