Like Vlad the Butcher claiming Crimea, and then the rest of Ukraine.
Trump repeatedly claims Greenland and the use of force to achieve it.
Europe needs to take the US at its word and not repeat the way it failed to pay attention to Russia.
https://en.wikipedia.org/wiki/Little_green_men_(Russo-Ukrainian_War)
Since coming to power in January, Trump has repeatedly insisted that he wants the self-governed territory to be in Washington's grip, refusing to rule out the use of force to do so.
"We need Greenland for international safety and security. We need it. We have to have it," Trump told podcaster Vince Coglianese. "I hate to put it that way, but we're going to have to have it."