On March 2, 2026 — less than 48 hours after the United States and Israel launched Operation Epic Fury against Iran — Hezbollah fired rockets, missiles, and drones at northern Israel in retaliation for the assassination of Iranian Supreme Leader Ali Khamenei. The attack triggered immediate Israeli airstrikes across Lebanon, including multiple strikes in Beirut and the Dahiyeh suburb, a Hezbollah stronghold. Israel killed 31 people in Beirut on the first day alone. The exchange marked the beginning of the 2026 Lebanon war, a separate but interconnected regional conflict that would devastate Lebanon.
Hezbollah launched approximately 200 rockets and drones in its opening barrage, setting off air raid sirens across northern Israel. The group framed the attacks as retaliation for Khamenei's killing in the opening minutes of the joint Israeli-US assault on Iran on February 28. Hezbollah official Wafiq Safa later admitted the group had started the war for revenge over Khamenei's assassination, though the organization subsequently offered additional justifications: that it was a defensive act after over a year of Israeli attacks despite a November 2024 ceasefire, and that it aimed to force Israel to evacuate seized Lebanese territories.
Israel seized the opening Hezbollah provided, launching a massive aerial campaign followed by a full-scale ground incursion into southern Lebanon beginning March 16. The Israeli response was devastating in its scope: by late March, more than 1,000 militants and civilians had been killed and approximately one million Lebanese were displaced with no option for return. The ground invasion expanded progressively, with Israel sending additional troops into southern Lebanon throughout late March.
The 2026 Lebanon war represented a catastrophic widening of the Iran conflict into a distinct regional war. What began as Operation Epic Fury against Iran had, within 48 hours, metastasized into a multi-front conflagration encompassing Iran, the Gulf states, Lebanon, and Israel. The speed of escalation vindicated the warnings of military and diplomatic experts who had cautioned that strikes on Iran would trigger a cascade of regional conflicts — warnings the administration had dismissed in its rush to war.