ISIS (Islamic State in Iraq and Syria) and IRGC (Iran Revolutionaryh Guard Corps) are ideologically similar, but IRGC actually runs something.
A secular and democratic Iran would bring stability to the Middle East and change the geopolitical game with Europe, China and Russia.
Realities on the ground in Iran belie the vaunted statistics about the country being 98 percent Muslim. Illegal non-Islam goes unreported.
Recent Israeli (and now American) strikes against the Iran nuclear program have stressed the regime, possibly to the breaking point.