President Trump on Wednesday, Dec. 4, called Canada Prime Minister Justin Trudeau “two-faced” after a video clip of the Canadian leader gossiping with other NATO leaders about Trump went viral on the sidelines of the NATO summit in London.

“Well, he’s two-faced,” Trump answered questions from reporters whether he has seen the clip during a meeting with German Chancellor Angela Merkel

“And honestly with Trudeau, he’s a nice guy,” Trump added. “I find him to be a very nice guy.”

The president then complained about Canada’s contribution to the defense budget for the alliance. 

“I find him to be a very nice guy but you know the truth is that I called him out the fact that he’s not paying 2% and I can see he’s not very happy about it,” Trump added. “He’s not paying 2% and he should be paying 2%. Canada—they have money.”

Earlier, Trudeau was caught complaining about Trump’s punctuality  earlier in the day, “He was late because he takes a 40-minute press conference off the top.” 

“You just watched his team’s jaws drop to the floor,” Trudeau added.

On Tuesday, President Trump held one-to-one meetings with Trudeau, France’s leader, Macron and the NATO Secretary-General Jens Stoltenberg. During the meetings he took questions from the press ,which totaled over two hours by the end of the day. 

The Canadian Broadcasting Corporation posted a 25-second clip and it quickly went viral on social media. It seemed that the world leaders did not realize they were being recorded. 

Trudeau’s office had no immediate comment. Trudeau spoke briefly to Trump as NATO leaders gathered for a summit Wednesday in Watford, outside London, and the two men shook hands.

Leaders of the 29 NATO states are marking the 70th anniversary of the military alliance—and trying to patch up differences over defense spending, the alliance’s strategic direction, and member nation Turkey’s military action in northern Syria, according to The Associated Press.

Include reporting from The Associated Press