Following through on a threat made after he won the presidency, Trump on Saturday imposed a blanket 10% levy on China, and 25% duties on both Canada and Mexico, over their alleged failure to prevent undocumented migrants and illegal drugs pouring into the US.

China's government on Sunday denounced the Trump administration's imposition of a long-threatened 10% tariff on Chinese imports while leaving the door open for talks with the U.S. that could avoid a deepening conflict.