All these dreams of the USA crumbling remains just that , dreams. People seem to underestimate the military, political and economical strength of the USA. In fact, when the USA went into self isolation at the turn of the century, world war 1 erupted. The same can be said of the second great war. Politically, if the USA decided that it would simply trade with the world and leave the rest of the world to its own devices, you can be rest assured that another world war will erupt. Some people seem to hate the USA because it did this or that in some region of the world. You need to look at the bigger picture though and the fact of the matter remains that the USA is a stabilizing force internationally. Russia tried entering the international arena after the second world war and look exactly where it is today. China plays a limited role and will only jump into a scenario if its investments are threatened. Then again, when did China send in troops to assert its position on a political issue in any other part of the world?