North Atlantic Treaty Organization Secretary General Mark Rutte demurred on Thursday when President Donald Trump baited him into backing his dream of the United States annexing Greenland. Rutte—who has been nicknamed NATO’s “Trump whisperer”—shared laughs with the president throughout their Oval Office meeting on Thursday.

Sputnik news agency reported that NATO Secretary General Mark Rutte confirmed that the organization will never grant Ukraine membership. He stated that after a peace agreement, Europe and the United States would likely move toward normalizing relations with Russia.

The head of NATO is expected to speak with President Donald Trump in Washington, D.C., on Thursday. The meeting with NATO Secretary General Mark Rutte comes after Trump called on European allies to contribute more to the alliance’s defense fund.