Muawiyah I vs Ruhollah Khomeini

Muawiyah I was appointed governor of Syria by Caliph Umar. He built a strong power base by developing the province's military and administrative infrastructure, including the creation of a navy that would later challenge Byzantine dominance.

Muawiyah launched naval expeditions against the Byzantine Empire, including the Battle of the Masts (655), where the Muslim fleet defeated the Byzantine navy. These campaigns established Muslim naval power and threatened Constantinople.

Muawiyah led the Syrian army against Caliph Ali at Siffin, demanding justice for Uthman's murder. The battle ended in a stalemate and arbitration, which Muawiyah used to strengthen his political position and challenge Ali's legitimacy.

After Ali's assassination, Muawiyah I established the Umayyad Caliphate, moving the capital from Medina to Damascus. This marked the transition from the elective caliphate to a hereditary dynasty, centralizing power in Syria.

Muawiyah I ordered a prolonged siege of Constantinople, using a large fleet and army. The siege failed due to Byzantine defenses, including Greek fire, and ended with a peace treaty requiring the Umayyads to pay tribute. It was a rare setback.

Muawiyah I designated his son Yazid as his successor, breaking the tradition of election and establishing hereditary succession. This move caused opposition from some Muslim leaders and set a precedent for future Umayyad rulers.

Khomeini was exiled from Iran after criticizing the Shah's White Revolution and granting of diplomatic immunity to US personnel. He settled in Najaf, Iraq, and later in France, where he continued to organize opposition to the Shah.

Khomeini led a popular revolution that overthrew the Shah's regime. He returned to Iran in February 1979 and established an Islamic Republic based on his doctrine of Velayat-e Faqih (Guardianship of the Jurist), with himself as Supreme Leader.

Khomeini supported the seizure of the US Embassy in Tehran by student militants, who held 52 American diplomats hostage for 444 days. The crisis deepened the rift with the US, led to economic sanctions, and consolidated Khomeini's power.

Khomeini led Iran through an eight-year war with Iraq, which began with an Iraqi invasion. The war resulted in hundreds of thousands of casualties and massive economic destruction, ending in a stalemate. Khomeini accepted a UN ceasefire in 1988.

Khomeini issued a fatwa calling for the death of author Salman Rushdie for his novel 'The Satanic Verses', which he deemed blasphemous. The fatwa led to international controversy, diplomatic tensions, and attacks on Rushdie's translators.