Canada’s Defence Industrial Strategy marks one of Ottawa’s most ambitious efforts in decades to rebuild military readiness and strengthen the industrial base behind the Canadian Armed Forces. However, renewed U.S. tariff pressure raises a harder question about whether Canada can turn defence investment into real capability while its production systems remain tied to American-linked supply chains. This article argues that tariffs are not simply an economic dispute, but a defence readiness issue that reveals the limits of Canada’s long-standing dependence on the United States.

