Nukes also provide all manner of maneuvering room. For instance, Iran, another country with a horrible government, wants a nuclear arsenal very badly. While the Israelis are worried — for understandable reasons — that the Iranians might one day use it against Israel, that's not the only reason it would be bad for Iran to have the bomb. Iran wants to be a regional hegemon able to meddle far beyond its own borders. Having nukes makes that much easier because it raises the stakes of any military confrontation.