Troops from several European countries arrived in Greenland to signify N.A.T.O.’s ability to secure the arctic region. The movement of troops comes amid discussions between American, Danish, and Greenland officials over a “fundamental disagreement” about the acquisition of the arctic island by the Trump administration. “Greenland is very important for the national security, including of Denmark,” Trump told reporters in the Oval Office. “And the problem is there’s not a