Israel’s military said it carried out a precision airstrike on Hezbollah’s underground headquarters in the southern suburbs of Beirut, killing the group’s longtime secretary-general, Hassan Nasrallah, along with other senior commanders. The Israel Defense Forces confirmed the operation, describing it as a targeted strike against Hezbollah’s leadership. The attack marks a major escalation in the conflict between Israel and Hezbollah, which has intensified alongside the wider Israel-Hamas war. Lebanese authorities reported significant casualties and extensive damage in the densely populated area, where the strike hit a major Hezbollah stronghold. Nasrallah was one of the most influential figures in the Iran-backed militant group and a central player in regional confrontations involving Israel, Lebanon, and other armed actors across the Middle East. His killing is likely to have far-reaching political and military consequences, raising fears of further retaliation and a broader regional escalation. The strike comes amid months of cross-border exchanges of fire and mounting tensions along the Israel-Lebanon frontier. While Israel has repeatedly targeted Hezbollah positions, the killing of Nasrallah represents one of the most consequential blows to the organization in years.