The foreign ministers of Denmark and Greenland will make their case against Donald Trump’s threats over the Arctic island when they meet U.S. Secretary of State Marco Rubio on Wednesday, according to an EU diplomat familiar with the plans.

While the talks have been mooted for some days, there was no confirmation of the details.

Danish Foreign Minister Lars Løkke Rasmussen and Greenlandic Foreign Minister Vivian Motzfeldt will hold the discussions at the White House.

The talks come after Trump ramped up his rhetoric on Greenland in a series of saber-rattling statements in recent days following his administration’s bombing raid on the Venezuelan capital and capture of leader Nicolás Maduro.

In a sign of the increasing diplomatic activity, Motzfeldt and Danish Defense Minister Troels Lund Poulsen will travel to Brussels on Monday for a meeting with NATO Secretary General Mark Rutte.

Both Copenhagen and Greenland, a self-ruling Danish territory, have rejected Trump’s designs on the island, which he has repeatedly stated is vital to American security interests.

“I’d love to make a deal with them. It’s easier. But one way or the other, we’re going to have Greenland,” Trump said aboard Air Force One on Sunday.

Danish Prime Minister Mette Frederiksen said that a U.S. invasion would lead to the end of NATO. European leaders have also pledged their support for Greenland’s right to self-determination, amid fears U.S. operation in Venezuela on Jan. 3 could embolden Trump to go after Greenland next.