in iran it was widely seen Perception_active as an act against the u.s. and its influence Influence in iran , including its perceived Perception_active attempts to undermine the iranian revolution Change_of_leadership and its longstanding support Supporting of the shah of iran , mohammad reza pahlavi , who was overthrown Change_of_leadership in 1979 .

the iranian revolution ( , ) , also known as the islamic revolution or the 1979 revolution , was a series of events that involved Cause_to_be_included the overthrow of the last monarch of iran , mohammad reza shah pahlavi , and the replacement of his government with an islamic republic under the grand ayatollah ruhollah khomeini , a leader of one of the factions in the revolt .