Former NATO boss and former Danish Prime Minister Anders Rasmussen said on Tuesday, January 20, 2026, that Trump’s insistence that Greenland should become part of the US represented the biggest challenge to NATO since its establishment in 1949.
“It’s really the future of NATO that is at stake,” said Rasmussen, who offers a unique perspective on the crisis as a former leader of both Denmark – from 2001 to 2009 – and NATO, where he served as secretary general from 2009 to 2014.