The world is in far greater danger of nuclear war from failure to stop Iran's nuclear program. There's absolutely no question that when they have the capability -- as well as nuclear-armed ICBMs to threaten the U.S. -- they'll try to take out Israel. Israel, of course, won't allow itself to be a sitting duck. Any nuclear confrontation there will become catastrophic.
With both Iran and Pakistan armed with "Islamic Bombs," the world will become a very scary place. Add in the NK loose cannon, China's expansionist aims and the likelihood of nuclear confrontation fairly soon is almost inevitable.