Okay, my take on things. To be honest, my friends and I talk about this kind of thing a lot.
WWIII won't be fought with soldiers or guns or F-22 Raptors or even military. It will be a smart war. By smart war, I mean when one government wants to know something the other government won't tell them, they'll just hack them crazy. They'll get all the government files, everything important from government internet files to bank transactions and delete everything, leaving the country without a shred of information. To prevent that country from attackiing militarily, they'd shut down all the military connections too. Deny them access to their own missiles, shut down all flights and trains for movement of troops and weapons, and shut down all the manufacturing in that country. And to think, this could all be done with one push of a button. I mean, think about it. We have those capabilities. One small incident in Pakistan shut down one of the largest and most visited websites in the world recently! We don't need to fight with people and weapons, the fighting's all about control of information now. My rant is over.