Denmark is in “full crisis mode” after U.S. President Donald Trump once again set his sights on Greenland, following the strike on Venezuela.

“We need Greenland from the standpoint of national security and Denmark is not going to be able to do it, I can tell you,” Trump said Sunday on Air Force One, echoing similar remarks made separately to The Atlantic magazine.

His comments come a day after the U.S. conducted a major military operation in Venezuela, capturing Venezuelan President Nicolas Maduro and his wife, Cilia Flores, in a surprise intervention that sent shockwaves across the globe.

It has raised alarm in Denmark, which is responsible for the defense of Greenland, a self-governing Danish territory.

“I have to say this very directly to the United States: It makes absolutely no sense to talk about the need for the United States to take over Greenland,” Danish Prime Minister Mette Frederiksen said Sunday in a Facebook post.