"I guess Justin T doesn't much like my making him pay up on NATO or Trade!" Trump tweeted.
Trump spent his two days in London lashing out at allies and creating new rifts, but host Boris Johnson avoided the worst of the flak by limiting his interaction with the president.
In a clip from a NATO reception that went viral on Wednesday, world leaders including Boris Johnson appeared to make fun of the U.S. president.
Fox News hosts quickly came to the defense of "dominant" President Donald Trump after a video emerged of world leaders apparently mocking the president at a NATO reception.
While some saw the viral video as a gossiping session between world leaders, Trudeau said he was "pleased" to share the story behind the announcement.
The husband of Trump counselor Kellyanne Conway claimed the video showed that the world thinks the president is a "deranged buffoon."
Trump cancelled a press conference and left the meeting earlier amid a spat with Justine Trudeau, but Jens Stoltenberg said unity within the alliance was "iron-clad."
Trump told reporters he had done enough press conferences and that he would "probably" leave the London meeting early.
The president also said the Canadian Prime Minister was a "very nice guy" after a long pause following the insult.
Queen Elizabeth II's only daughter was spotted with Justin Trudeau, Emmanuel Macron and Boris Johnson at a Buckingham Palace reception Tuesday.
Canada is among the NATO nations spending less than 2 percent of GDP on military investments, much to Trump's frustration.
The owner of a Canadian gun store has denied being racist, after claiming that he advertised a "White Friday" sale because "Black Friday" would remind people of the Justin Trudeau blackface scandal.
Halloween was a colorful time for Washington's politicians, who indulged in a bit of dress-up just like every other ordinary Joe.
"It used to be the west wants in, and now it's the west wants out," said former Conservative MP Rona Ambrose.
President Donald Trump congratulated Prime Minister Justin Trudeau on his narrow re-election victory: "Canada is well served."
While Canadians took to Twitter to celebrate or grieve Justin Trudeau's reelection, there wasn't much on American Twitter.
Conservative candidate Andrew Scheer has vowed to crack down on immigration to "the greatest country on earth"—and no, he doesn't mean the United States.
Former President Barack Obama has said the world still needs Canadian Prime Minister Justin Trudeau's "progressive leadership."
Polls suggest Prime Minister Justin Trudeau could narrowly hold onto Canada's top job, with a minority government.
The Canadian prime minister apologised for wearing racist makeup during an appearance on Facebook Watch show "New Mom, Who Dis?"
"Mr Trudeau you are a phoney and you are a fraud, and you do not deserve to govern this country," Conservative Leader Andrew Scheer said.
"Canadians look like all sorts of people—that's the beauty of Canada," NDP Leader Jagmeet Singh said, shutting down a man's racist comments.
We should use this moment to reflect on Canadian racism—and then be realistic about how the scandal informs our electoral choices.
Dumb and offensive attention-seeking antics almost two decades ago don't cancel out the man Justin Trudeau has become —and the kind of prime minister he has been to all Canadians.
The NDP party slammed the prime minister and his climate change action plan, by releasing a statement which reads, in its entirety, "You. Bought. A. Pipeline."
Canadian Conservative Party Leader Andrew Scheer says Prime Minister Justin Trudeau "has lost the moral authority to govern," but his political career has not been entirely scandal-free either.
"I'm not going to make light of the situation," Trudeau said during a campaign stop in Saskatoon, Canada, on Thursday night.
Conservatives seized on the issue, with the party's leader Andrew Scheer declaring Trudeau "not fit to govern this country."
"The fact of the matter is that I've always—and you'll know this—been more enthusiastic about costumes than is sometimes appropriate," the Canadian prime minister told reporters.
The Canadian Prime Minister apologized for the incidents, saying, "I shouldn't have done it. I should have know better and I'm very sorry."