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

Hezbollah’s leader Hassan Nasrallah’s death left a void at the top of the world’s most heavily armed nonstate militia. WSJ's ...

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

Leaders in Tehran suggested it would be the Lebanese militia that would strike back at Israel after the killing of Hassan ...

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

TEL AVIV, Israel—Since news of the killing of longtime Hezbollah leader Hassan Nasrallah began spreading across the Middle ...

Iran will not leave any of "the criminal acts" of Israel unanswered, Iranian Foreign Ministry spokesperson Nasser Kanaani ...

Nasrallah was killed in a massive Israeli bombing in southern Beirut on Friday. He led the most powerful of Iran’s Middle ...

Iran has relied on proxies as its first line of defense for decades. Israel's delivery of crippling blows to Hezbollah raises ...

Israel has plunged Hezbollah into disarray and decapitated its leadership. How Iran will react is an open question.

Israel's killing of Hezbollah chief Sayyed Hassan Nasrallah was met with silence by many Sunni-led states across the region, ...

The severity of Israel’s attacks have called into question the very reason for the organization's existence, which was ...