As host of the G7 summit in France, President Emmanuel Macron was officially in charge.
But on Wednesday, his guest, US President Donald Trump, made it clear who he thought was calling the shots.
Arriving for the final morning session of the three-day summit after the other leaders had already taken their seats, Trump strode into the room and declared: "I'm the boss."
Amid laughter, Macron appeared to take the comment with good humour.
"How are you?" the French president asked.
"Good, thank you," replied Trump, a tycoon before becoming president who famously hosted the TV show "The Apprentice" with its catchphrase "You're fired!", as he finally took his seat.
Fresh from clinching an accord to end the war with Iran and celebrating his 80th birthday, Trump's presence has dominated the summit in the spa town of Evian on Lake Geneva.
French officials will be satisfied that the mercurial US president has stayed for the entire event and signed on to the G7 communique — in contrast to the previous gathering in Canada, where he left early.
In an unusual gesture, Macron has invited Trump to dinner at the Palace of Versailles outside Paris after the summit winds down on Wednesday afternoon.
Macron, under pressure to show he is not fawning over Trump, has already said the evening at Versailles will not be a "gala" dinner.
