(The Center Square) – President Donald Trump said Thursday a deal structure regarding Greenland is developing after he stepped back from threatened tariffs on European allies, which he previously linked to Denmark handing over control of the semi-autonomous Arctic island. Danish officials say Greenland's sovereignty is non-negotiable. Trump, however, asserts that an agreement is being worked on, but he gave no additional details. This all unfolded around President Trump's visit to Davos for the World Economic Forum.