Across 5,200 km of Canada's Arctic, its military spent two months on a mission to meet the challenges of a changing north.
Washington says it "will not impede" vessels in the Strait of Hormuz travelling to and from ports of other countries.
US vice-president says a lot of progress was made in talks at the weekend, adding: "The ball is in Iran's court".
Trump says Iranians are doing no business in the Hormuz strait as UK maritime officials tell ships in the area to expect ...
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