They needed to reconstruct their countries and rebuild their economies, with the US demanding huge retrospective payments for its support. The US became a superpower with nuclear bomb capability and an imposing power of dominance. Industrial countries rebuilt in what the Germans called their Wirtschaftswunder and the French les Trentes Glorieuses, the thirty years of post-war prosperity. Meanwhile the US leveraged its prosperity to spread its hegemony around the world.
US power was enhanced with the beginning of Perestroika and after the fall of the Soviet Union. In the new millennium the US establishment declared the "War on Terror" as justification to occupy Afghanistan and Iraq, while attempting to subdue Hezbollah in Lebanon, changing the régime in Libya and attempting to destroy Syria, all with the goal of reshuffling and forming a "New Middle East".