US-Canada trade war escalates as Trump threatens tariff hike on autos after Carney vows to retaliate  BBCKinew backs Ford as fellow premier exchanges barbs with Trump  CBC‘Bring it on buddy’: Everything Ontario’s Doug Ford said about President Donald Trump  Global NewsOpinion: The U.S. isn’t negotiating trade with Canada. This is a shakedown  The Globe and MailDoug Ford may need a reality check on his tariff tough talk  Toronto Star