Global markets plunged after President Donald Trump stoked fears of a U.S. trade war with the European Union, America's largest trading partner.

U.S. futures tumbled alongside global markets early Tuesday after President Donald Trump threatened to hit eight NATO members with new tariffs as tensions escalate over his attempts to assert American control over Greenland.

UK stocks slipped on Tuesday, swept up in a global risk-off mode after U.S. President Donald Trump vowed to slap tariffs on European nations until the U.S. is allowed to buy Greenland.

European stocks were sharply lower on Monday as traders react to U.S. President Donald Trump's threat to hike tariffs on a number of European countries.

S&P 500 and Nasdaq futures sank to one-month lows on Tuesday, as U.S. traders returned from a long weekend to witness a rout in global markets.

European shares tumbled from a near-record high after Donald Trump announced new tariffs on eight countries over Greenland, reigniting the trade war between the US and Europe.

The dollar fell sharply and Wall Street stocks were set for losses on Tuesday even as Donald Trump said he would hold a meeting in Davos with interested parties over the Greenland

Canada's main stock ​index opened ‌lower on Tuesday, as ‌U.S. President Donald Trump's ​renewed tariff threats ‍against European allies over Greenland ⁠triggered ‍global risk-off sentiment.