US President Donald Trump has imposed a 50% tariff on a wide range of goods imported from Canada, in retaliation for what he called "unequal treatment" of US cars, dairy and alcohol.

A long-awaited bridge is finally set to open next Monday across the Detroit River, a concrete and steel symbol of the U.S. and Canada’s interlinked economies.

Canada has signed on as an observer to an international program — made up of Italy, Japan and the U.K. — working to develop the next generation of stealth fighter jets. The move is another example of the federal government diversifying its military partnerships away from the U.