China warned the U.S. of its "first red line that cannot be crossed" after a report that President Donald Trump intends to increase arms sales to Taiwan.

President Donald Trump is planning to ramp up weapons sales to Taiwan to a level exceeding the pace set during his first term, Reuters reported, a move that risks escalating military tensions with China at a time the two nations are already locked in difficult talks over tariffs.

The U.S. officials, who spoke on condition of anonymity, said they expect U.S. approvals for weapons sales to Taipei over the next four years to surpass those in Trump's first ter