The United States and Canada swung sharply toward a diplomatic and trade crisis on Sunday as top White House advisers lashed out at Canadian Prime Minister Justin Trudeau a day after U.S. President Trump called him "very dishonest and weak".
Trump said he chose to back out of the G7 communique after watching Trudeau's closing summit news conference, at which he warned that Canada would not be pushed around on tariffs - a point the Canadian prime minister had made several times before.
US President Donald Trump has imposed a 25 per cent tariff on import of steel from Canada and another 15 per cent on aluminium using the "national security interest" provisions of the existing American laws.
Mr. Trump insisted relationships with allies were a "10" just before he left the summit.
Trudeau, at a news conference at the conclusion of the G-7 summit, said that Canadians are polite, reasonable, but will not be pushed around.
Trump pulled out of endorsing a joint communique after the G7 meet finished on Saturday with the USA president accusing Trudeau, the summit's chairman, of dishonesty.
Freeland, asked about support from allies, said: "The position of our European allies, including Japan, is the same as ours".
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Trump's attacks have Canadian businesses that use aluminum and steel very anxious, said Ontario Conservative MP John Brassard, who added that there is real concern that there will be serious job implications in very short order.
"There's a special place in hell for any foreign leader that engages in bad faith diplomacy with President Donald J. Trump and then tries to stab him in the back on the way out the door", Trump trade adviser Peter Navarro said in an interview with "Fox News Sunday".
Shortly after Trump departed the conference for Singapore, where the president is set to meet North Korean leader Kim Jong Un, he took to Twitter to launch an unexpected tirade against the prime minister.
Those tensions boiled over on Saturday, with Trudeau and European leaders reaffirming plans to institute retaliatory measures and Trump lashing out in response by refusing to endorse the the G7 communique, a negotiated statement on shared priorities among the group. "Our Tariffs are in response to his of 270% on dairy!"
Trudeau, in Quebec City for bilateral meetings with non-G7 leaders after the summit, did not comment as he arrived. But even those vested in Canadian trade are not expected to come to Trudeau's defense as long as the US economy is roaring. "And no subsidies. I even said, 'no tariffs!'" Trump insisted.
France is also standing by the G7 communique, a French presidency official said, adding anyone departing from the commitments made at the summit would be showing their "incoherence and inconsistency". These countermeasures amount up to 16.6 billion Canadian dollars (about 12 billion US dollars) in imports of steel, aluminum, and other products from the Unites States, and are set to come into effect on July 1 this year.
"Ultimately that's what you want", Trump said.
"We're talking to all countries", Trump said, denouncing what he said were huge existing tariffs on United States exports around the world. Trump said it was snapped as they waited for changes he'd requested to the communique, which he ended up pulling out of.