Canadians have a grudging commitment to their national defense. The country spends well under 2 percent of its GDP on the military. Its fleets are aging, and much of its infrastructure is crumbling.

Canada’s military is in a “death spiral.” This is how Minister of National Defense Bill Blair described the state of Canada’s armed forces at last month’s Ottawa Conference on Security and Defense.

In the past year Mr Trump has repeatedly asserted that it would be in Canada’s interest to become America’s 51st state. No ...

To help shift the country away from its dependence on the United States, Canada’s prime minister plans to spend billions to revitalize its military and meet a NATO spending goal. By Ian Austen ...