U.S. President Donald Trump's tariff decisions since he took office on January 20 have shocked financial markets and sent a wave of uncertainty through the global economy.Here is a timeline of the major developments:February 1 - Trump imposes 25% tariffs on Mexican and most Canadian imports and 10% on goods from China,

WASHINGTON/TOKYO (Reuters) -U.S. President Donald Trump on Tuesday said he would impose a 50% tariff on imported copper and soon introduce long-threatened levies on semiconductors and pharmaceuticals, broadening his trade war that has rattled markets ...

Trump’s renewed tariff threats hit some of the closest U.S. allies. Japanese Prime Minister Shigeru Ishiba described the developments as “deeply regrettable.”