Subsequently Nasrallah underwent a period of Islamic study at a Shiite seminary in Najaf, Iraq. Nasrallah was forced to return to Lebanon in 1979, by that time having completed the first part of his study, as Saddam Hussein was expelling many Shia's, including Ruhollah Khomeini (Ayatollah Khomeini) and Abbas Musawi a year earlier. Back in Lebanon, he studied and taught at the school of Amal’s leader Abbas al-Musawi, later being selected as Amal's political delegate in Beqaa, and making him a member of the central political office. Around the same time, in 1980, Saddam Hussein had Sadr executed.