Experts think it is unlikely Iran will escalate the conflict and that it will instead focus on rebuilding Hezbollah and ...

Follow NBC News' live coverage as Iran responds to Hezbollah leader Hassan Nasrallah's killing in an Israeli strike.

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

Hassan Nasrallah, the longtime leader of Iran-backed Hezbollah, was killed in an airstrike in Lebanon's capital Beirut.

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

Sheikh Hassan Nasrallah, the leader of Lebanon's militant Shia Islamist Hezbollah movement, is one of the best known and most ...

The single-most-important leader in Iran’s constellation of allied militias, turned the Shiite militant group into the ...

Hezbollah confirmed Saturday that its leader of more than three decades was killed in an Israeli airstrike in southern Beirut ...

Hassan Nasrallah, the leader of Hezbollah, the most powerful Iranian-backed militant group in the Middle East, was killed by ...

Conservatives have blamed moderate Iranian officials over the killing, and demanded direct retaliation against Israel ...

Israel intensified its military campaign across the Middle East on Monday, striking central Beirut for the first time since ...

An Israeli airstrike in Beirut that eliminated Hezbollah leader Hassan Nasrallah was based on intelligence from an undercover ...