Canada in the Cold War in power believed that as long as the US president retained absolute control of the nuclear weapons, Canadian forces could be ordered to undertake nuclear missions for the US without Canadian consent. During the Cuban Missile Crisis, Canada was expected to fall in line with American foreign policy, in that Canada's military forces were expected to go on immediate war alert status. Diefenbaker however, refused to do so emphasizing the need for United Nations intervention. It would only be after a tense phone call between President John F. Kennedy and Diefenbaker that Canada's armed forces would begin preparations for "immediate
Cuban Missile Crisis on October 19 was "shot down." Two Operational Plans (OPLAN) were considered. OPLAN 316 envisioned a full invasion of Cuba by Army and Marine units, supported by the Navy following Air Force and naval airstrikes. Army units in the US would have had trouble fielding mechanized and logistical assets, and the US Navy could not supply enough amphibious shipping to transport even a modest armored contingent from the Army. OPLAN 312, primarily an Air Force and Navy carrier operation, was designed with enough flexibility to do anything from engaging individual missile sites to providing air support for OPLAN 316's ground