There’s one superpower that dominates the planet again, and it’s the United States.In just one year in office, President Donald Trump has catapulted the U.S. from a country that seemed on the brink of inevitable decline, into the American colossus that’s put the other great powers — especially China and Russia — in the shade, and now determines the tempo and direction of world events.What happened in Davos should set aside any doubts. In 24 hours, President Trump turned world-wide panic about possible U.S. military intervention in Greenland, into world-wide relief with a framework for peacefully securing the giant island










