Hashemi Rafsanjani interview after a failed assassination attempt (Hafte Tir Bombing) attributed to the MKO. I believe this was when the Iranian Parliament or Senate was blown Up and killed a many top ranking clerics including Ayatollah Beheshti, a rival to Ayatollah Khomeiny.In retrospect it is not clear if the plot was indeed conducted by the MKO or was a result of different fighting factions within the regime. (circa 1980)
More on Rafsanjani