There's a generation gap of sorts -- Saddam Hussein started the Iran-Iraq War, which raged for eight years, and the pro-Khomeini fanatics disproportionately fed themselves into the guns before they could reproduce. Carter/Mondale refused to support the Shah, then arfed up the hostage rescue raid. President Trump had the IRGC head thug capped, and shouldn't have stopped there, but naming some names might be problematical.
Trump took out a big fish... mattered...
I was in Iran from 3-77 until 3 -79 working as an American Contractor. The uprisings to depose the Shah started around 8 - 78. The execution of high ranking military officers started in 2-79. That is probably the reason for the 8 year war with Iraq.