User blog comment:Callofduty4/Modern Warfare 3 shown at E3/@comment-70.169.117.151-20110613171015/@comment-1840877-20110613191558

OP, have you ever heard of mutually assured destruction? It comes from the Cold War. The Americans and the Soviets had so many nukes pointed at each other that neither side dared use them. If America nuked Russia, Russia would just nuke them back. That's why no country will use nuke - they know it would lead to their demise, as well as their enemy's.