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“Good fences make good neighbors,” goes the saying — one that seems to encapsulate U.S. President Donald Trump’s threat, made on Saturday, of slapping tariffs of 100% on Canada if the country strikes a trade deal with China.

Canada, for its part, said it has “no intention” of pursuing a free trade agreement with China, Prime Minister Mark Carney said Sunday.

Trump’s warning comes after he withdrew on Thursday his invitation to Carney for Canada to join his “Board of Peace,” a council originally established to oversee the reconstruction of Gaza.