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

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

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

Israel said it had bombed Houthi targets in Yemen on Sunday, expanding its confrontation with Iran's allies in the region ...

Israel rapidly ramped up its attacks on Hezbollah two weeks ago with the declared goal of making northern areas safe for ...

Israeli air strikes on Yemen killed four people on Sunday and wounded more than 30, Huthi media reported, after the Israeli ...

After Israel killed Hezbollah's leader, the U.S. says it wants to stop Iran from "exploiting the situation or expanding the ...

Iran has called upon United Nations to convene an urgent meeting over Israel's terrorist aggressions in Lebanon and across ...

Washington is said to be exerting significant pressure on Israel to refrain from a ground invasion of south Lebanon after ...

Israeli jets have continued attacking targets across Lebanon, including the capital, Beirut, for a seventh day, with Lebanese ...

We began by asking her how she expected Iran to respond to the killing of yet another senior Hezbollah leader in Lebanon.

Israeli airstrikes across Lebanon killed dozens of people on Sunday as the Hezbollah militant group sustained a string of ...