If people think the US was the only superpower after the Soviet collapse in 1991 they haven’t seen anything yet! Pre-emptive wars with false intelligence reports like what happened in Iraq may be only the beginning. I’d hate to be a dictator in a country that holds significant strategic value to the US and isn’t all that US friendly right now. Sagging poll numbers or some rogue terrorist hiding in some corner of the country could cause my dictatorship to come to an end!
Prime minister Putin was not terribly far off base when he said the world needs a new security structure. The question is how long it will take the world to regain the military security balance it once had and how much damage will be done before then.