Let's assume for the sake of argument the current government gets overthrown, who is qualified to take the lead? Are there any opposition parties inside Iran?
Russia is very concerned cause the protests concentrate in Iranian Azerbaidschan.
If the Regime gets overthrown this part of the country could join Azeri State. But this is a far theory.
I believe Mullahs will opress as Chinese did in Tianenmen with more than 10000 killed protesters.
"Russia is once again focusing on Azerbaijan’s attachment to Turkey and on its “Turkification” of the minority nationalities within its borders, something one advisor to the Kremlin says is a threat to stability in the region and to the interests of Russia and Iran (Ekonomicheskiye Izvestia, December 6)"