Justin Trudeau announced some of the 25% tariffs against the U.S. would begin on Tuesday in response to Donald Trump's punishing tariffs on Canadian goods.

Trudeau and Starmer will speak “soon,” said the Canadian high commissioner to the U.K., as Ottawa seeks to coordinate a response with allies.

Even as Canada’s prime minister announced more than $100 billion in retaliatory tariffs, he made clear that he was imposing them reluctantly.