The president-elect’s threat to hit Canada, Mexico and China with new tariffs is already rocking business and diplomatic relationships and could topple the trade pacts he signed in his first term.

Donald Trump says he will impose a 25% tariff on goods coming from Mexico and Canada, plus an extra 10% on Chinese goods.

President-elect Donald Trump’s pledge to impose massive tariffs was an early warning shot to try to force the hand of allies and adversaries to come to the negotiating table on immigration and trade issues,

Officials from Mexico, Canada and China warned U.S. President-elect Donald Trump's threat of imposing hefty tariffs on goods from the three largest U.S. trading partners would harm the economies of all involved and would risk aggravating inflation and damaging job markets.

The president-elect said that he would impose the across-the-board tariffs on Day 1 and that they would stay in place until Canada, Mexico and China halted the flow of drugs and migrants.

The US president-elect is using tariffs as a weapon of diplomacy, even coercion, says BBC economics editor Faisal Islam.

Mexico has supplanted China as the main source of goods, but imports keep climbing.

President-elect Donald Trump's threatened tariffs on imports from Mexico and Canada would reignite inflation in 2025, hurt the economy, experts say.