President-elect Donald Trump spoke Friday with the president of Taiwan, a move that will be sure to anger China, the AP reports. It is highly unusual, perhaps unprecedented, for a US president or president-elect to speak directly with a leader of Taiwan, a self-governing island the US broke diplomatic ties with in 1979. Washington has pursued a so-called "one China" policy since 1979, when it shifted diplomatic recognition of China from the government in Taiwan to the communist government on the mainland. Under that policy, the US recognizes Beijing as representing China but retains unofficial ties with Taiwan. A statement from Trump's transition team said he spoke with Taiwanese President Tsai Ing-wen, who offered her congratulations. It was not clear who initiated the call.
Taiwan split from the Chinese mainland amid civil war in 1949. The US policy acknowledges the Chinese view over sovereignty, but considers Taiwan's status as unsettled. Although the US does not have formal diplomatic ties with Taiwan, it has close unofficial ties. Taiwan's government has a representative office in Washington and other US cities. The US also has legal commitments to help Taiwan maintain the ability to defend itself. Friday's call is the most stark example yet of how Trump has flouted diplomatic conventions since he won the Nov. 8 election. He has apparently undertaken calls with foreign leaders without guidance customarily lent by the State Department, which oversees US diplomacy.