Leaders of some of the world’s biggest economic powers will arrive in the Canadian Rockies on Sunday for a Group of Seven summit shadowed by a widening war in the Middle East, and U.S.

Prime Minister Mark Carney will welcome leaders of the world's most powerful democratic countries Sunday for the start of a three-day meeting in the Rocky Mountains — a high-stakes summit that longtime G7 observers say could be one of the most consequential in years.

Group of Seven (G7) alliance leaders on Sunday are set to gather in Canada amid an upcoming deadline for President Trump’s tariff policy and an outbreak of conflict in the Middle East. Leaders from France,