The World Trade Organization chief said on Thursday that any tit-for-tat trade wars prompted by U.S. President Donald Trump's tariff threats would have catastrophic consequences for global growth, urging states to refrain from retaliation.

President Donald Trump on Tuesday doubled down on his threat to impose stiff tariffs on the United States' top trading partners Feb. 1, despite allies' assertions Tuesday that the tariff agenda is likely to take shape over a longer,

Questions are swirling about what President Trump’s trade agenda is going to look like after Day 1 tariffs on traditional U.S. trading partners didn’t materialize. Trump put out a trade policy memo on his first day in office that directs federal agencies to study U.

The president said he will impose tariffs Feb. 1 on products from Canada, Mexico and China, countries that together account for more than a third of U.S. trade.

US President Donald Trump has threatened to slap a 25-percent tariff on Mexican goods on February 1, a move that analysts say would deal a heavy blow to Latin America's