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Hello, and welcome to NewsHour from the BBC World Service.
Coming to you from our studio in central London, I'm Celia Hatton.
For years in Canada, it was accepted that Mark Carney didn't want to wade into politics.
He turned down approaches from both the major Conservative and Liberal parties,
preferring instead to remain an enthusiastic economist.
Now, without ever winning an election, he he's about to become Canada's prime minister.
And the stakes couldn't be higher.
Canada is facing a spiraling trade war with the United States, its biggest trading partner by far.
It's a move that could cripple the Canadian economy.
Anxieties in Canada are already running high.
Mr.
Trump's repeatedly threatened or joked about turning Canada into America's 51st state.
That's left Canadians feeling defiant, but also vulnerable.