Canadian Prime Minister Mark Carney won the election Monday by promising to manage a mercurial U.S. president bent on waging a global trade war.

Leaders around the world ¡ª desperate to defend their own beleaguered economies ¡ª will be watching to see if he knows how.

A banker turned politician, Carney¡¯s calm demeanor appealed to Canadians unnerved by seeing the U.S. switch from trusted neighbor to adversary overnight. President Donald Trump¡¯s tariffs and threats to turn Canada into the 51st U.S. state turned the fortunes of Carney¡¯s Liberal Party, which for months appeared poised to lose the election to Pierre Poilievre¡¯s Conservatives. He assured anxious voters that the country could not just survive the trade war ¡ª but win it.