It’s not for peaceful purposes,” U,S, Air Force Gen. Alexus Grynkewich said. “They’re not studying the seals and the polar bears."

Britain is discussing with NATO allies how to enhance Arctic security against Russia and China. Transport Secretary Heidi Alexander said Sunday that these talks are routine and not a response to U.S.

The response comes amid concerns over Russia's continued military build-up in the region and its close ties to China.

Top Trump aide Stephen Miller says it's the "formal position" of the White House that Denmark's territory of Greenland "should be part of the U.S."

NATO should launch an operation in the Arctic to address U.S. security concerns, Belgium's defence minister told Reuters on Sunday, urging transatlantic unity amid growing European unease about U.S. President Donald Trump's push to take control of Greenland.

Trump’s threat to annex an autonomous part of Denmark has plunged NATO into an unprecedented situation: An alliance based on collective defense now faces the prospect that one member might attack another.

Trump continued: "RUSSIA AND CHINA HAVE ZERO FEAR OF NATO WITHOUT THE UNITED STATES, AND I DOUBT NATO WOULD BE THERE FOR US IF WE REALLY NEEDED THEM. EVERYONE IS LUCKY THAT I REBUILT OUR MILITARY IN MY FIRST TERM, AND CONTINUE TO DO SO. We will always be there for NATO, even if they won’t be there for us."

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