or like it has been for so many years and staying as a "cold war" and winding each other up... http://news.sky.com/skynews/article/0,,30200-1283013,00.html
The largest threat to Nuclear War is Iran & Israel It could be a senario where Israel or America hit the Iranian Nuclear installations. Bear in mind the danger that would cause with the radioactive release. There is no way either are going to let Iran develop a Nuclear weapon.