The threat comes as Israel launches a ground incursion against the Iran-backed militant group Hezbollah in southern Lebanon.
Follow NBC News' live coverage as Iran responds to Hezbollah leader Hassan Nasrallah's killing in an Israeli strike.
U.S.-designated terror group chief died in "agony" as gases from airstrike explosions gradually choked him, says Israeli news ...
Iran will not leave any of "the criminal acts" of Israel unanswered, Iranian Foreign Ministry spokesperson Nasser Kanaani ...
Israel intensified its military campaign across the Middle East on Monday, striking central Beirut for the first time since ...
Renowned for his compelling oratory, strategic insight, and leadership abilities, Hassan Nasrallah transformed Hezbollah into ...
Israel has successfully executed a precision airstrike that killed Hezbollah's long-standing leader, Hassan Nasrallah, in ...