Who was Hassan Nasrallah, the Hezbollah leader killed by Israeli airstrike in Beirut?

Hezbollah leader Hassan Nasrallah, who led the terror group for more than 30 years, was killed in an Israeli airstrike.

Nasrallah, 64, was killed during a massive airstrike on the Iran-backed group's "central headquarters" in Beirut, Lebanon on Friday, the Israel Defense Forces said in a statement.

Hezbollah confirmed Nasrallah's death, saying its longtime leader "has joined his fellow martyrs."