Iran's quest for nuclear weapons now worries more Americans than ever. If the regime is willing to be this cruel to its own people, could the American soldiers or Israeli citizens living within reach of Iran's missiles expect any mercy?
Um... What about MAD? In Iran's case, it would be damage to Israel, and destruction to Iran. Israel has had nuclear weapons capability for decades, and if Iran were foolish enough to attack Israel with one, the answer would be manifold. The mullahs are obviously interested in remaining in power, not being vaporized.
Communists want to live.
Islamic nuts want to Martyr themselves.
In this case, MAD is not mutually assured destruction. With one warhead, Iran could wipe out Tel Aviv, effectively ending modern Israel. Iran on the other hand is a huge target. They could take a hundred nukes and still be a nation.