US military power fascinates me. To try and guage their military strength, I'm posing this hypothetical, albeit unlikely, scenario. Let's say a war broke out between the parties mentioned above. To make it interesting, first let's exclude wildcard factors such as nuclear weapons and military drafts. Also let's assume that the US was extricated from every other war and conflict anywhere else in the world thus having the option of concentrating their entire military resources in this conflict. The "Rest of the Americas" side include the armed forces of Canada, Mexico, Brazil and Cuba (and every other American country) but discount the ideological-differences factor. Keep in mind that whereas the US is military much superior to any one of these nations, these nations would be fighting as a bloc. Furthermore, keep in mind that the military technological gap between the US and these countries, though still huge, is not as big as the gap between, say, the US and its archaic adversaries such as Iraq or the Taliban. Brazil and Canada, for example, have some pretty formidable military resources of their own. On the other hand, only the US forces are truly battle-hardened. Can the US military wage and win a war over such a vast theatre? The "Rest of the Americas" would easily have the manpower advantage. The combined strength of US ground forces (Army and Marines) is only about 650 000 and that has to be spread across two continents. Does the US have sufficient aircraft to bombard such a vast theatre and control such a vast airspace? Would the US Navy be sufficient to control the seas on both sides of the Americas (Atlantic and Pacific) in an area ranging from the Arctic in the North to the Straits of Magellan in the South? Could the US win such a hypothetical, albeit unlikely, war???