These arguments based on MAD (mutually assured destruction) all assume one thing: That the nukes are controlled by a rational and sane person. This is not always the case. This is why, the US sanctioning Iran while having a stockpile of nukes is NOT hypocritical. If the leader of the US, Israel or any other democracy loses his mind and decides to start a nuclear war, there are checks and balances in the system that will prevent him from doing so. If Ahmadinejad or any other dictator does the same, who's going to stop him?

and it was a humor post