Europeans Confront Rupture in U.S. Ties

President Trump's demands that Denmark hand over Greenland to the U.S. or risk a trade war and possible military action is confronting Europe with the unthinkable: Its major ally for more than 70 years has turned into one of its most urgent threats.

- By Marcus Walker in Rome and David Luhnow in London

People in Nuuk, Greenland, over the weekend waved Greenlandic flags in front of the U.S. consulate.

SEAN GALLUP/GETTY IMAGES