Prime Minister Mark Carney has confirmed that Canada has war-gamed a US attack, calling it "risk management" while stressing the scenario is highly improbable, amid President Donald Trump's tariffs and repeated talk of making Canada the "51st state". Canadian military modelling reported by the Globe and Mail reportedly assumes Canada's strategic positions would be overwhelmed within a week, leading to guerrilla-style resistance and calls for help from allies such as Britain and France. Experts say an invasion remains a long shot given deep defence ties through NATO and NORAD (the joint US-Canada air and aerospace defence command), but the planning shows how far the North American alliance has shifted.