U.S. President Donald Trump said on Sunday that Denmark has not been able to do anything to get the "Russian threat" away from Greenland, and said, "Now it is time, and it will be done!!!"

The Danes have tried everything to pacify an unpredictable president. Now they may be reaching their red line.

Republican lawmakers are scrambling to contain President Donald Trump's threats of taking possession of Greenland, with some showing the most strident opposition to almost anything the Trump administration has done since taking office.

Denmark's foreign minister said the closed-door meeting was a "frank but also constructive" discussion. He said a high-level working group would be formed "to explore if we can find a common way forward.

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

Thousands of Greenlanders carefully marched across snow and ice to take a stand against U.S. President Donald Trump.