The Globe and Mail reports in its Saturday edition that U.S. President Donald Trump threatened to impose tariffs of 50 per cent on the European Union and 25 per cent on all smart phones entering his country starting next month, abruptly ratcheting up his global trade war Friday after weeks of de-escalation. The Globe's Adrian Morrow writes that the President also reiterated his call for the U.S. to stop importing cars from Canada, piling on further uncertainty for an industry that is already scaling back. On Friday, writing on Truth Social, Mr. Trump said he would tariff all EU exports to the U.S. at 50 per cent starting June 1 because talks with the trading bloc are jammed. In another post, he said he had told Apple chief executive officer Tim Cook that all iPhones sold in the U.S. "will be manufactured and built in the United States, not India, or anyplace else," or "a Tariff of at least 25% must be paid by Apple." Later at the White House, he said this tariff would apply to all smart phones, not only iPhones -- specifically naming those made by Samsung. He said he would impose it "by the end of June." Mr. Trump indicated he decided on the policy after Mr. Cook told him of plans to expand manufacturing in India.