NATO leaders professed unity on Wednesday at a summit near London but a spat over off-the-cuff chit chat at a royal reception rattled their show of solidarity.
US President Donald Trump branded the leader of America's northern neighbour "two-faced" after Canadian Prime Minister Justin Trudeau appeared to gossip about Trump in comments caught on camera and microphone.
Trudeau was seen standing in a huddle with French President Emmanuel Macron, British Prime Minister Boris Johnson, Dutch Prime Minister Mark Rutte and Britain's Princess Anne, daughter of Queen Elizabeth II at Tuesday evening's Buckingham Palace reception for NATO leaders.
After Johnson asked Macron, is that why you were late? Trudeau could be heard saying "he was late because he takes a 40-minute press conference off the top".
Trudeau confirmed that was a reference to Trump's long and unscheduled question-and-answer session with journalists earlier Tuesday.
Trudeau also said: "You just watched his team's jaws drop to ...