As the two countries struggle over a trade war sparked by President Trump's tariff hikes, the U.S. president gave a full display of his unique mix of graciousness and aggression.

Canadian Prime Minister Mark Carney hit back after President Donald Trump said he wanted to make Canada the United States’ 51st state.

Trump says the US will "always' protect Canada, and adds that "it's not a money thing". He then questions why the American ...

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