Well, since neither Israel nor U.S. have done anything about Iranian regime in nearly 4 decades since the latter’s formal inception, the Russians would.. in time.
The Corker Bill was about lifting sanctions so business can be done with Iran. Obama and the GOP are both committed to trading with and containing Iran like was done with the USSR during the “Cold War”.
Support for the Saudis and Gulf Arabs fighting the Iranian backed tribe in Yemen and ‘opposition’ in Syria is proof of what the real Uniparty policy in Washington is. Containment of Iran and trading with Iran. The former is the stick and the latter the carrot.