President Donald Trump is not known to be a fan of international gatherings of world leaders, but he changed his tune at this year's G7 summit at a French Alpine resort, where he was buoyed by support from his counterparts for his tentative agreement with Iran to end the war.

The naval mission for the Strait of Hormuz that U.S. allies are proposing as a follow-up to a deal to end the Iran war would aim to reassure crews and shipping insurers that vessels can safely navigate the narrow waterway again, by removing any explosive mines and potentially providing military escorts.