Trump’s push for Greenland is about securing the Arctic for Western defense and keeping China and Russia from dominating the region. The U.S., long a protector of Europe and the Western Hemisphere, is acting in a Thucydides Trap — responding to rising challengers, not causing instability. Greenland, part of North America and a core U.S. security interest, is key to controlling strategic chokepoints like the GIUK Gap. NATO’s own chief admits the West is fortunate to have Trump advocatingpushing for itthis, and Davos is starting to see that realism, not ideology, must guide Arctic policy.