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Taiwan’s government pressed the case on Saturday for US arms supplies, saying they ​are based on US law and serve as a shared deterrent to regional threats, after US President Donald Trump said he had not decided ‌on future sales.

Despite a lack of formal diplomatic ties, the United States is the most important international backer for democratically governed Taiwan, which China claims as its territory. Washington is bound by the Taiwan Relations Act to provide weapons to the island.

But on Friday, after a summit with Chinese President Xi Jinping in Beijing, Trump said he had not decided whether to proceed ​with a major weapons sale, adding to uncertainty about US support for Taiwan.

In a statement, Taiwan President Lai Ching-te’s spokesperson Karen ​Kuo said China’s escalating military threat is the “sole destabilising factor” in the Indo-Pacific region, including the Taiwan Strait.