What kind of things would happen around the world? Would some nations feel it was a green light to become aggressive towards particular countries that used to have America's protection? Russia with some Eastern European countries? Would a united European military be enough to make the likes of Russia and China think twice about doing something that they wouldn't of in the past? Britain and France have nukes afterall, although a lot less than the two countries mentioned of course. What about in other parts of the planet, could things change there? If America didn't protect Australia who would if Indonesia or China wanted it? Britain? Would Britain still protect Australia and NZ these days?