The Global Showdown Over Greenland

President Trump has been raising tensions around the world for weeks by claiming that he would stop at nothing in his quest to seize Greenland from Denmark. But on Wednesday, he appeared to back down, announcing that he’d reached the framework of an agreement with NATO over Greenland’s future. Mark Landler, the London bureau chief, explains the ups and downs of Mr. Trump’s Greenland gambit, and why it may signal the beginning of a new world order.