Canada finds itself in an unexpected situation as it considers the remote possibility of a United States invasion. Prime Minister Mark Carney recently acknowledged that he has contemplated this scenario, which seemed inconceivable until recent times. Speaking to the New York Times, Carney emphasized the importance of preparedness, especially as relations with the US evolve under former President Donald Trump’s administration.
Carney described the potential threat as minimal and unlikely, yet he pointed out that it’s a part of risk management to consider all eventualities. The former US president’s tariffs and his controversial remarks about incorporating Canada as the 51st state have prompted Canadian officials to strategize for a hypothetical American attack. In 2025, Trump himself mentioned that a military confrontation with Canada was “highly unlikely,” preferring to use economic strategies to achieve political objectives.
Understanding the Improbability of Conflict
Military experts agree that an armed conflict between Canada and the US is improbable. Lt-Gen Christopher Coates, who served for 34 years with the Royal Canadian Air Force, explained that throughout his career, the idea of the US posing a military threat to Canada was never considered. He highlighted the deep-rooted cooperation between the two nations, particularly through their joint participation in NATO and NORAD missions.
Both countries share intelligence and collaborate on Arctic defense, making an outright attack unlikely. Coates suggested that any aggressive move from the US would likely be through cyber means rather than traditional military force.
Historical Context of US-Canada Relations
The relationship between Canada and the US has not always been as harmonious as it is today. Tim Foran from the Canadian War Museum notes that a significant part of Canadian identity involves resisting US expansionism in the 18th and 19th centuries. The early formation of Canada as a collection of British colonies loyal to the Crown was partly in response to US territorial ambitions.
In the past, the US had attempted to invade parts of what are now Canadian territories. During the War of 1812, American forces invaded regions now known as Upper and Lower Canada, leading to a stalemate. These historical events have left a lasting impression on Canadian defense strategies.
Theoretical Invasion Scenarios
Although the prospect of a US invasion remains unlikely, the Canadian military has developed models to envision such a scenario. Reports indicate that in the event of an attack, Canadian forces would be quickly outnumbered and would resort to guerilla tactics. Allied nations like France and Britain would potentially be called upon for support.
According to Matthew Schmidt from the University of New Haven, the fact that Canada is preparing for such a situation reflects the shifting global dynamics. He noted that while Trump’s comments about annexing Canada might not be taken seriously by Americans, they have resonated with Canadians.
Schmidt further suggested that an actual invasion would likely focus on Canada’s resources and political infrastructure. However, he believes many American military officers would oppose such orders, viewing them as illegal and immoral.
