The New York Times on Instagram: "President Trump’s whipsawing approach over the past few weeks to Greenland — insisting on the largest land acquisition in American history and then dropping it without explanation, threatening allies and then reversing himself — was a revealing exercise in a new era of American coercive diplomacy. David Sanger, our national security correspondent, explains how Trump’s escalations with Europe over Greenland, a semiautonomous Danish territory, seem to have led to