Eight nations targeted by new White House tariffs have hit back at President Donald Trump, accusing the U.S. of threatening to undermine transatlantic relationships and risking a "dangerous downward spiral."

TIME spoke to legal experts about whether Trump could legally pull the U.S. out of NATO and the wider implications.

Republican Rep. Michael McCaul warned on Sunday that any U.S. military intervention to obtain Greenland would put America at odds with its NATO allies -- and possibly spell the end of the alliance itself.

AMERICA’S HUNGER for Greenland is setting off an explosive row within NATO.  President Donald Trump, infuriated by European allies’ resistance to his effort to annex the autonomous Danish territory, said on January 17th that he would impose 10% tariffs on imports from eight European countries that had sent troops there two days earlier.

Prime Minister Mark Carney is considering sending soldiers to Greenland for military exercises with NATO allies, as U.S. President Donald Trump threatens tariffs on European nations unless they let him purchase and control the semiautonomous island,

U.S. NATO ambassador Matthew Whitaker defends American focus on Greenland amid European backlash, calling Arctic security crucial for continental defense.

The poll of NATO member states showed median approval of China’s leadership rising and that of Washington falling in 2025.

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.