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

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

Iran's Supreme Leader Ayatollah Ali Khamenei was placed in a secure location after Hezbollah leader Hassan Nasrallah's ...

President Biden said, "Nasrallah and the terrorist group he led, Hezbollah, were responsible for killing hundreds of ...

In the short term, Israel’s strike may bring more chaos. But it holds the promise of a future peace.

Iran on Saturday called for an emergency meeting of the UN Security Council following the killing of Hezbollah leader Hassan ...

Israel's killing of Hezbollah leader Hassan Nasrallah has given Iran a serious dilemma -- how to cope with the loss of a ...

While Khamenei’s reaction shows Tehran is in no rush to hit back, experts say it could build nuclear weapons to restore ...

Israel's killing of Hezbollah chief Hassan Nasrallah in an air strike on Friday was a feat of spycraft capping days of operations highlighting its deep infiltration of the Iran-backed group.

Israel has successfully executed a precision airstrike that killed Hezbollah's long-standing leader, Hassan Nasrallah, in ...

Israeli PM Benjamin Netanyahu warned Iran's Ayatollah regime and asserted that those who target Israel will face ...

Iran announced on Saturday that a prominent general in its paramilitary Revolutionary Guard sanctioned by the U.S. also died in the airstrike.