Article content OTTAWA — Canada’s closest physical neighbours are in an escalating dispute that risks breaking the military alliance that has protected the nations of the North Atlantic for decades. Advertisement 2 Story continues below This advertisement has not loaded yet, but your article continues below. THIS CONTENT IS RESERVED FOR SUBSCRIBERS ONLY Subscribe now to read the latest news in your city and across Canada. Unlimited online access to articles from across Canada with one account. Get exclusive access to the Toronto Sun ePaper, an electronic replica of the print edition that you can share, download and comment on....