Top diplomats from the Group of 7 industrialized democracies on Friday were wrapping up their final day of talks that have been overshadowed by U.S. President Donald Trump’s trade and foreign policies as well as his repeated taunts toward host Canada.

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.

Trump’s 25% tariffs on steel and aluminum took effect overnight, dealing another blow to a neighborly alliance and escalating a trade war.