Poland’s Defense Minister Antoni Macierewicz said on Wednesday evening that they’ve struck a deal with the United States to purchase Patriot Missile Systems.

“A memorandum was signed tonight that the U.S. government has agreed to sell Poland Patriot missiles in the most modern configuration,” Macierewicz said in a news conference broadcast on public television on Thursday morning.

“I am glad that I can pass on this information on the day of President’s Trump visit to Warsaw,” Macierewicz also said.

U.S. President Donald Trump arrived on Wednesday in Warsaw where the White House said he would showcase his commitment to the North Atlantic Treaty Organization (NATO) in a speech and in meetings with a group of nations closest to Russia on his way to the G20 summit in Germany on Friday and Saturday.