Sinai was born Ibrahim Yassin in a Shi'ite village in eastern Lebanon in 1964. During the
Lebanese Civil War, his family was affiliated with the
South Lebanese Army. Sinai became disillusioned with the actions of Palestinian militant groups and the
Syrian Army during the Lebanese Civil War. He claimed that Palestinian militants had tied his daughter between two cars, then drove the cars in opposite directions. During the
Israeli invasion of Lebanon in 1982, Sinai sought and received help from the
Israel Defense Force (IDF) while his wife was giving birth. His wife was flown via helicopter to
Rambam Hospital in
Haifa, Israel. After this event, Sinai began providing information to Israel until he was caught by Hezbollah. According to Sinai, Hezbollah members kidnapped, questioned, and tortured him. In an interview with the
Times of Israel, he claimed that future Hezbollah leader
Imad Mughniyeh, then a young member of the organization, was his "chief tormenter," even burning Sinai's newborn in front of him. After his release, Sinai began more actively spying for Israel. ==Activities for Israel==