European business groups have called for the EU to consider countermeasures in response to U.S. tariff threats.

By Philip Blenkinsop BRUSSELS, Jan 21 (Reuters) - U.S. customs authorities will face a real challenge if President Donald Trump goes through with his threat to place tariffs on six EU countries - rather than the whole European Union - given the ease of movement of goods between EU members.

Gold jumped to record high and stocks fell on Monday after Donald Trump’s pursuit of Greenland threatened to reignite a trade war with Europe and left transatlantic relations facing their gravest crisis in years.

Asia-Pacific markets traded subdued as investors weigh renewed U.S. tariff threats tied to Greenland that have stoked concerns of a growing rift between Washington and European nations.