The only way I could see Canada doing this would be to activate a secret clause of the original agreement to develop atomic weapons that Canada, upon request, would be allowed to have their own copies of any weapons developed through the development effort of the program known as Tube Alloys and or Manhattan Project due to their supplying much of the initial raw material. This section of the agreement had been hidden in classified archives for years and when the Canadians did not invoke it in the 50s and 60s and accepted Dual Control with the Americans it was believed by the few that remembered it to be lost/forgotten/destroyed.
This could probably be made into a 'Clive Cussler' type novel!
This could probably be made into a 'Clive Cussler' type novel!