Israeli forces launched a significant attack on Hezbollah's command center in Beirut's southern suburbs, resulting in the confirmed death of Hassan Nasrallah, Hezbollah's leader. The news unfolded throughout the day, with initial uncertainty giving way to official confirmation by Hezbollah. Iran's Supreme Leader Khamenei issued statements of support for Lebanon and Hezbollah, later releasing a condolence message for Nasrallah's martyrdom. Abbas Nilfroshan, a high-ranking IRGC official, was also reported killed in the strike. Iran declared five days of national mourning. The event prompted widespread reactions, with U.S. President Biden describing it as "justice served." Israeli Prime Minister Netanyahu claimed a "settling of accounts." The day concluded with reports of renewed Israeli strikes on Beirut and speculation about Hezbollah's future leadership.