From a telephone conversation with the Taiwanese President Tsai Ing-wen to the recent signing of the Taiwan Travel Act (TTA), US President Donald Trumphas signalled his administration is amending Washington’s long-held China policy. The TTA encourages exchange visits between US and Taiwanese officials at all levels. In December, Trump signed the National Defence Authorisation Act which calls for mutual port visits for both navies. Both moves have significantly shifted US policy towards Taiwan in a manner that has deeply riled China. According to state media, the moves challenge Beijing’s cherished “one China” policy and thus risk provoking a war across the straits. Beijing demands that any country wanting diplomatic relations with China cannot have official contact with Taipei.