Canada has a theoretical plan for resisting a potential U.S. invasion, using guerrilla tactics if conventional defenses fail.

Canada has developed a theoretical military model for responding to a potential U.S. invasion, according to the Globe and Mail, citing senior officials. The scenario envisions a rapid U.S. advance overwhelming Canadian land and sea defenses within days, prompting a shift to guerrilla tactics like ambushes and drone attacks. The plan is conceptual, not operational, and officials deem an actual invasion unlikely despite past rhetoric from former President Donald Trump. Signs of an imminent threat could include the U.S. ending cooperation with Canada through NORAD. Canada may seek support from allies and consider deploying troops to Greenland amid heightened NATO tensions.