Mughnniyah was on the FBI's most-wanted terrorists list and was sought by the authorities in 42 other countries as well. Here are some of the major attacks Mughniyah was allegedly involved in:
Torture and killing of CIA's Lebanon station chief, 1984: Mughniyah was allegedly involved in the kidnapping and killing of William F. Buckley, the CIA station chief. Officials said Mughniyah sent videotapes of brutal interrogation sessions to the CIA before Buckley was killed.
Hijacking of TWA Flight 847, 1985: A flight from Athens to Rome was hijacked by Hezbollah operatives. U.S. Navy diver Robert Stethem was murdered, and dozens of other passengers were held hostage for about two weeks.
Suicide bombing of Israeli Embassy in Buenos Aires, 1992: Four Israeli civilians and 25 Argentines were killed in the 1994 attack on the embassy.
Bombing of Jewish community center in Buenos Aires, 1994: In the same city two years later, 85 people died. Most of the victims were Jewish.
Khobar Towers bombing in Saudi Arabia, 1996: Mughniyah was also believed to be involved in this attack that killed 19 U.S. Air Force pilots and staff when a truck bomb blew up at the tower.
Role in training militias, 2006-2007: During one of the deadliest periods of the war in Iraq, Mughniyah was said to be involved in supplying and training Shiite militias who were responsible for killing and wounding hundreds of U.S. troops.