Denmark’s prime minister is on a tour of major European capitals as the continent faces what she called “a more uncertain reality” and her country moves to strengthen its military presence around Greenland. Prime Minister Mette Frederiksen planned stops in Berlin, Paris and Brussels. Her trip comes as new U.S. President Donald Trump has said he would not rule out the use of military force to seize control of Greenland, an autonomous territory belonging to NATO and European Union member Denmark. On Monday evening, her government announced a roughly 14.6 billion-kroner agreement with parties including the governments of Greenland and the Faeroe Islands to “improve capabilities for surveillance and maintaining sovereignty in the region.”