The Islamist movement played a decisive role in the formation, expansion, and ultimate victory of the Iranian Revolution in 1977-1978. Meanwhile, Ayatollah Khomeini's leadership played an unrivaled and undisputed role in organizing, guiding, and giving specific intellectual and ideological direction to the revolution. .

The purpose of the following article is to examine the approaches and type of confrontation between Ayatollah Khomeini and the entire left movement and Marxism during the two years of 1977-1978 and until the eve of the victory of the revolution. This article was written using the historical research method and the process tracing technique, and attempts to answer the following question: What relationship did Ayatollah Khomeini see at that time between the position of the entire Marxist movement and the intellectual foundations and political approach of the Iranian Revolution?

The research findings show that Ayatollah Khomeini, who evaluated the historical background of the left movement in opposition to the national interests of the Iranian people, saw the intellectual and ideological foundations of that movement in complete conflict with the Islamic nature of the revolution and considered its role in revolutionary developments insignificant. While Ayatollah Khomeini believed in freedom of expression and belief for the left in post-revolutionary Iran, she opposed any participation of that movement in the country's official politics.