As part of the move, which the Trump administration has communicated to some European capitals, the U.S. will eliminate roughly 200 positions from the NATO entities that oversee and plan the alliance's military and intelligence operations, said the sources, who requested anonymity to discuss private diplomatic conversations.

The planned exit marks the Trump administration’s latest move to scale back Washington’s military investment in Europe’s defense.

The US president earlier said Nato would be in "the ash heap of history" without him, after doubling down on his Greenland demands.

Trump has long said he deserves the Nobel Peace Prize. Venezuelan opposition leader Maria Corina Machado, who recently won the prize for her fight for democracy, gave her prize medal to Trump. But the Norwegian Nobel Committee said the award can’t be revoked, shared or transferred.

Stocks are falling on Wall Street after U.S. President Donald Trump threatened to hit eight NATO members with new tariffs as tensions escalate over his attempts to assert American control over Greenland.

GOP Rep. Michael McCaul warned on Sunday that any U.S. military intervention to obtain Greenland would mean war with America's NATO allies.

If anyone in Europe knows NATO and Danish politics, it’s Anders Fogh Rasmussen, the military alliance’s former secretary general and a former Danish prime minister. “Tariffs on allies make no sense,” Rasmussen told The Wall Street Journal.

Get the latest news and live updates on the Trump administration as House Speaker Mike Johnson marks a U.K. milestone and the Supreme Court weighs Hawaii's 'vampire' gun law.