Israel launched an intense barrage of airstrikes across swathes of Lebanon on Monday in what was the deadliest day for the country since at least the 2006 war fought between Israel and the powerful Iran-backed militant group Hezbollah.

Israel and Hezbollah traded heavy strikes on Sept. 23, marking the deadliest day of conflict in Lebanon in nearly a year.

Israel launched airstrikes on targets across southern Lebanon, killing nearly 500 people in one of the deadliest days of fighting in nearly two decades and fanning fears of all-out war.