Denmark's Prime Minister Mette Frederiksen and Greenland's Premier Jens-Frederik Nielsen met US Secretary of State Marco Rubio at the Munich Security Conference. They agreed to continue talks on Greenland, the semi-autonomous Danish territory President Donald Trump once threatened to buy. Nielsen said in a social media post, "it was emphasised that the conversations being made are the right way forward and the interests of Greenland were once again clearly highlighted." Frederiksen tweeted, "Constructive talk with Secretary of State Marco Rubio together with Jens-Frederik Nielsen, Chairman of Naalakkersuisut, at the Munich Security Conference." She added, "Work will continue as agreed in the high-level working group." The meeting comes amid tense ties between Europe and the US. Trump had repeatedly called European nations "decaying" and threatened to take control of Greenland. He told reporters, "We’re negotiating right now for Greenland. I think Greenland’s going to want us, but we get along very well with Europe. We’ll see how it all works out." Last month, Trump softened his tone after agreeing with NATO Secretary-General Mark Rutte on giving the US more influence in Greenland without buying it. The US, Denmark, and Greenland started talks to ease the crisis. A poll by The Associated Press and NORC Center for Public Affairs Research shows about 70% of US adults disapprove of Trump's Greenland plan, including half of Republican supporters. This disapproval is higher than Trump's general foreign policy rating. Sweden announced it will send Gripen fighter jets to patrol Greenland under NATO's new Arctic Sentry mission. Prime Minister Ulf Kristersson said, "As a NATO ally, Sweden has a responsibility to contribute to the security of the entire territory of the Alliance. The Arctic region is becoming increasingly important from a strategic perspective." Swedish jets will be based in Iceland, where six aircraft are already stationed as part of NATO Air Policing. Swedish special forces will also train in Greenland for a few weeks.