Hassan Nasrallah, Hezbollah’s powerful leader, believed he was untouchable. For decades, he operated in the shadows, orchestrating attacks and planning strategies from heavily fortified bunkers deep underground.

A Times investigation shows how extensively Israel penetrated the Lebanese militia, closely tracking the group’s commanders and culminating in the assassination of its leader, Hassan Nasrallah.

Israeli Defense Forces Chief of the General Staff, LTG Herzi Halevi, said that "to truly defeat Hezbollah," civilian life must return to the Lebanon border.

Hezbollah said Wednesday that senior military commander Fuad Shukr was inside the building in Beirut's southern suburbs hit by Israel the previous day and that his fate was still unknown. The Israeli military said its Tuesday strike had "eliminated" Shukr,