President Donald Trump's punishing tariffs rocked global financial markets on Thursday, with the dollar and U.S. stocks tumbling as investors rushed to safe havens on fears a broadening trade war would push an already fragile world economy into recession.

Countries will struggle to figure out how Trump’s officials calculated each specific rate, which he said was based on a mix of tariffs, subsidies and currency manipulation. A few, such as Brazil and the UK,

President Donald Trump's move to slap a 10% tariff on most goods imported to the United States, as well as much higher levies on dozens of rivals and allies alike, has intensified a global trade war that threatens to stoke inflation and stall growth.