What's Israel doing in southern Lebanon?

Israel’s invasion in Lebanon is rapidly widening and could outlast the war in Iran. People in southern Lebanon are living through a war within a war. The war is of course the U.S.-Israeli campaign against Iran. The war within Lebanon started with a series of strikes from the militant group Hezbollah. They launched rockets and drones from Lebanon into Israel. Israel responded with strikes in Lebanon. And with that, a conflict that has flared on and off for decades reignited.