Attacking Iran will be a grave mistake. The only way to cause minimal damage(as a comprehensive one is unattainable) is to use mini nukes. Using nuclear weapons against a non-nuclear nation is genocide and against Geneva convention and international law. Once the nuclear taboo is broken, all hell will break loose. There are no winners in a nuclear war.
NATO backs Turkey's fight against ISIS (Reuters)
from the article: Ahmadinejad: Israel and the U.S. would not dare attack Iran