Opinion: An American military invasion of Canada? No longer unthinkable, but highly unlikely

An attempt at a military invasion of Canada would be catastrophic for the U.S. Short of a desire for self-sabotage, there is no incentive for Americans to undertake such a reckless course. Two months ago, the idea that the United States posed a military threat to Canada was unthinkable. Today, discussions about a potential American annexation attempt are dominating Canadian media headlines and are a primary issue of concern among the country's government officials. How did we get here? And should Canadians be worried? While the Donald Trump administration's rhetoric and behaviour toward Canada is disturbing, the prospect of American…