Canada war-games US invasion scenario as Trump redefines bilateral ties

October 4, 2026 at 04:30 AM2 min

This digest was compiled by AI from multiple sources — links to the originals are below.

Canadian Prime Minister Mark Carney said Canada is preparing for a once-unthinkable US invasion scenario, calling it risk management. He told the New York Times he must consider all possibilities as US-Canada relations are redefined under Donald Trump. Military experts and the White House say an invasion is highly unlikely, but a January Leger poll found over 30% of Canadians believe one is likely.

Key Facts

Prime Minister Mark Carney told the New York Times that Canada has prepared for a US invasion scenario, calling it risk management.
A January Leger poll found that over 30% of Canadians believed a US invasion was likely after the US captured Nicolás Maduro in Venezuela.
In 2025, President Trump said it was 'highly unlikely' the US would ever use force against Canada and would continue economic pressure instead.
The White House told the BBC this week that 'President Trump has done more than anyone to protect the great people of Canada.'
Lt-Gen Christopher Coates, a former Royal Canadian Air Force officer, said Canada and the US collaborate on defence through NATO and NORAD.

Carney's Risk Management

Prime Minister Mark Carney admitted last week that he has prepared for a once-unthinkable scenario — a US invasion. He told the New York Times he had a responsibility to consider all possibilities as the US-Canada relationship is redefined under the Donald Trump presidency. Carney called the preparation 'just risk management' and stressed the risk was low and the likelihood highly improbable. Trump's global tariffs and his often-repeated desire to make Canada the 51st state have led Canada to war game an attack by the Americans.

Expert Assessment of Invasion Likelihood

Military experts who spoke to the BBC think an invasion is a long shot, pointing to the multiple ways the two countries work together on defence. Lt-Gen Christopher Coates, a former military officer of 34 years with the Royal Canadian Air Force, said a war between Canada and the US would be complicated and almost difficult to imagine. Coates noted that Canada and the US are both members of NATO, which mandates members to defend a fellow member-nation should they be attacked. The two countries also conduct joint Arctic defence missions under NORAD and frequently share intelligence. Coates believes an attack by the US on Canada would not begin with an armed assault, but rather with more discreet means like cyberwarfare.

Historical Context and Public Concern

After World War II, Canada and the US became natural allies and have become heavily integrated economically, militarily and culturally. Tim Foran, a researcher with the Canadian War Museum, said a core tenet of Canada's identity is its resistance of US expansionism in the 18th and 19th Centuries. Foran stated that 'fear of the United States is foundational to the political project that is Canada.' In January, after the US captured Nicolás Maduro in Venezuela, a Leger poll suggested that over 30% of Canadians believed that a US invasion was likely.