question? what happened to ur other name? why the change? and on topic......i think ironman could take all the world if its not vs other heroes or villians....just regular joes around the world....hell yea
If he has nuclear capability then so do we. And he's only one guy, albeit a powerful one. I'm not saying lots of people wouldn't die, but that he would die well before he took all of us out, even if it meant nuking him and killing soem of our own.
tony's suit is highly advanced, he'd detect an incoming missile and get the f*ck out of there... and his detection equipment would be more advanced than ours...
In any case, I don't think it would come to nukes. Getting control of any nukes would be hard for him (he wouldn't have government contacts like he does in comic-world) and taking them by force would be tricky at best, suicide at worst. And trying to take him out with a nuke would be amazingly inefficient...just fo one guy. An EMP or simply a trained army barrage should do the trick. Yeah, that suit kicks ass, but if 100's of fighter jets are screaming toward him, would he really be able to take them all out without incurring damage??
If he's killing Earth-people we'd find out where he is eventually. And like I said, he has to sleep too. If he went into hiding for a few years, set up a network of bots, suits, plans, etc. before striking...then he could probably do it. Otherwise, if he just starts attacking, there's no way...
He doesn't have the resources here to repair his suit. and you give him his most powerful suit and he would not be able to kill us all. I doubt he could truly stand against a prepared american force. If he caught america unaware they would go underground with a unit and the best scientist and the president. If any of the select group was dead they would secretly recruit any scientist they needed. They would contact allies and old enemies and work together on a common threat. Tony would have a high body count but his days are numbered. Even if he had an admantium suit, and electromagnetic shield he would be taken out by the best and brightest the world has to offer.