Two guys, one from america and one from england doing some crazy stuff around the world, killing arabas and russians. Then the american guy dies while doing some badass stunt to save some women no one really cares about.
The whole world is going crazy and then the english guy puts out some bigger guns and then the super evil guy and the hero have a big gun fight on some bridge.

Part two:
The guy who commands the american guy who dies in the atomic bomb goes crazy because no one told him that people die in wars and he kills even more guys as revenge thing and the english hero from the first part plays hero again and kills the evil one with a knife.