Greenland, NATO push back
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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."
The response comes amid concerns over Russia's continued military build-up in the region and its close ties to China.
German Foreign Minister Johann Wadephul said on Monday that NATO allies had to work together for security, and said Greenland and Denmark should decide the future of the island, which U.S. President Donald Trump says should belong to the United States.
The US is considering military action to seize Greenland, in a move that could cause divisions within the NATO alliance.
Britain's Transport secretary characterized the security talks as "business as usual" rather than a direct response to Trump.