U.S. futures have fallen sharply and European markets shed more than 1% on tensions driven by the Trump administration’s new tariff threats over Greenland. Benchmarks in France, Germany and Britain declined early Tuesday. World shares have taken a hit after President Donald Trump threatened to slap a 10% extra tariff on imports from eight European countries that oppose his push to claim Greenland. Tokyo's benchmark fell more than 1% after Prime Minister Sanae Takaichi called a snap election for Feb. 8. The yield on the 40-year Japanese government bond rose to over 4%, its highest level ever. This week will bring corporate earnings in the U.S. and an update on inflation.