Why Does Iran Want Nuclear Weapons?
According to U.S. intellegence, Iran will not have a nuclear bomb till after 2010. It would then be a danger, but the Soviet Union has tens of 1000s of nuclear warheads, each far more powerful what Iran hopes to develop. For decades it was more threatening to the US than Iran will be in 2010.
Even today, Pakistan, which is quite unstable and whose army often protects Al Qaeda, already has nuclear weapons as does Korea, a far more repressive country.
As with Iraq, the questions is why war and why now? It took fifty years, but we won the cold war without bombing Russia. Compared with Russia, Iran is lightweight with a tin-horn dictator.