As Trump calls for a U.S. takeover of Greenland, NATO's future hangs in the balance. Here are 15 claims about the security alliance.

The US is considering military action to seize Greenland, in a move that could cause divisions within the NATO alliance.

President Donald Trump’s lust for Greenland may be the final nail in NATO’s coffin. His threat to invade the Arctic island is more than a game-changer. It’s a game destroyer. The North Atlantic Treaty Organisation (NATO) alliance is built around a central premise.

The North Atlantic Treaty Organization’s two-day summit started in the Netherlands on Tuesday with over 9,000 people expected to attend, according to Dutch officials. With 45 world leaders in attendance, the summit’s top focuses are the alliance’s ...

(CNN) — Poland has triggered Article 4 of the North Atlantic Treaty Organization, NATO, after the country reported 19 “breaches” of its airspace by Russian drones on Wednesday. (CNN) — Poland has triggered Article 4 of the North Atlantic Treaty ...