Because they don't want foreign opponents at a time when they're having trouble keeping their house in order? Also, speaking frankly, there's an implications t

Because they don't want foreign opponents at a time when they're having trouble keeping their house in order? Also, speaking frankly, there's an implications that people don't want Iran to have nuclear weapons because it's a Muslim country. This is false. It would be far palatable for Saudi Arabia or the UAE to develop nuclear arms because even though neither country is 'Christian' or 'democratic', they are at least allies.