The whole world is at war, more or less, and it will not end in the foreseeable future. I do not believe there will be a war such as nuclear between the 'mega powers', as there is far too much money to be made off the limited warfare currently being engaged in. A nuclear war would ruin the wonderful worldwide economy currently engorging the pockets of those at the tip top. Don't worry about nukes in that way. It is possible, though, if a religious group such as ISIS may go off the edge and detonate a small nuke. But you never know.