The War of Brothers (; Harb al-Ikhwa) was a period of violent armed clashes between rivals Amal and Hezbollah, Lebanon's main Shiite militia movements, during the final stages of the Lebanese Civil War. The fighting broke out in April 1988 and proceeded intermittently in three phases over the following years until the signing of an agreement brokered by their respective foreign backers, Syria and Iran, in November 1990.