The Iranian Revolution of 1979 marked a pivotal moment in Middle Eastern history. It overthrew the U.S.-backed Shah, replacing his secular monarchy with an Islamic Republic led by Ayatollah Khomeini. This seismic shift reshaped Iran's political landscape and sent shockwaves across the region. The revolution's impact extended far beyond Iran's borders. It inspired Islamic movements worldwide, strained U.S.-Iran relations, and intensified the Sunni-Shia rivalry. The new regime's policies led to international isolation and ongoing tensions with Western powers.