Diplomats from the G7 nations were set to negotiate late into the night over a joint statement to show a united front in Canada on Thursday after weeks of tension between U.S. allies and President Donald Trump over his upending of Western trade and security policy.

Foreign Affairs Minister Mélanie Joly is welcoming her counterparts from some of the world's most powerful countries to Quebec this week, as Ottawa works to maintain unity between Washington and its Group of Seven partners and pushes back on U.