Danish troops who fought alongside US forces feel betrayed, as Trump threatens Greenland and denigrates NATO CNNDenmark offered to trade Greenland to the U.S. in 1910—and America thought it was crazy FortunePrime Minister Mette Frederiksen of Denmark Visits Greenland The New York Times‘Pain, betrayal, sadness’: Danish veterans describe shock of Trump admin rhetoric NPRUS Seeks Carte Blanche for Military Presence in Greenland Bloomberg.com