The agreement, signed on the sidelines of the UN General Assembly in New York, grants Washington a greater military presence on the continent-sized Arctic island. It resolves a months-long standoff after Trump threatened to seize Greenland, and is welcomed by NATO and the European Union. The deal allows the US to modernize and expand activities at Pituffik Space Base, establish new bases at Narsarsuaq and Mestersvig, and permits US aircraft to fly over and land anywhere in Greenland, including undersea access. It also bars non-NATO countries from setting up military installations or a persistent military presence without unanimous approval from Denmark, Greenland, and the US, and restricts investors from "sensitive sectors" outside NATO and the EU.