There are also potential serious risks for the continuing stability of global economics due to the geostrategic location of Iran, her offensive missiles arsenal and the petroleum sea-lanes exiting the Persian Gulf, plus the Saudi & Kuwaiti oil fields open to air attacks, if something were to go wrong in toppling the current dictatorship.
Either way the current collection of mullahs must be prevented in gaining any nuclear advantage.
Well, I think if we help Iranian people topple these mullahs as they are, we save ourselves from having to arm Kuwait and Saudi Arabia with nuclear missiles!