Not true, low yield 500K tactical nukes would not kill millions, rather make it impossible for them to survive in those areas for many years in the future. The 14 facilities under construction, and 44 uranium mines (of the 120 known) would have to be neutralized. EMP bombs (Electro-Magnetic Pulse) would wipe out electronics on aircraft and computers and really everything electrical with no loss of life. Right now, the Iranian congress is well aware of the trouble Armadidejan has put them in with the world watching. The US just imposed sanctions on Iran and Syria and Russia is protesting, and for good reason, they are a chief supplier to terrorism in the world, and were a chief player in the corruption in the Oil for Food program in Iraq. It is not out of the rhelm of possibility that when the first bombings happen in Iran, the Bekkah Valley in Syria will also be demolished. That is where the WMD from Iraq was moved to before the coaltion forces came in and Deposed Saddam Hussien.
A good EMP over Iran might be a solution to the current problem, just a thought.