There isn't going to be any more big wars between powerful countries because of one thing: $$$
There may be some smaller crises like the recents events in Libya in some places like Eastern Europe, Asia, South America or the Middle-East but no direct fighting between bigger countries because money rules the world these days. And not to mention nukes, not even someone like kim-jong il is crazy enough to launch one. Of course there could always be a terrorist organisation that manages to get a nuke and launch/detonate it but the real world isn't like call of duty or 'the sum of all fears' where it would escalate into global conflict.
I doubt anything will happen in Iran too. The western media makes Ahmadinejad look like a mad man but he is not even the most powerful man in the country. There's no way that he could persuade the real leaders to launch a nuke at israel or wherever (if they even had one) because the consequences would be massive. No major country would support them (Russia, China etc) and they would get fucked up by everyone.