Ayatollah Khomeini was a prominent Iranian religious leader and politician who played a key role in the 1979 Iranian Revolution. He became the Supreme Leader of Iran, establishing a theocratic government based on Islamic law. Khomeini's leadership transformed Iran from a monarchy under Shah Mohammad Reza Pahlavi to an Islamic Republic, significantly impacting the country's political and social landscape. Khomeini was known for his strong opposition to Western influence in Iran and advocated for the return to traditional Islamic values. His teachings and writings, particularly the book "Islamic Government," laid the foundation for the new regime. Khomeini's legacy continues to shape Iran's policies and its relationship with the world today.