 Israel responded with airstrikes on what it said were launch sites in southern Lebanon. Israel and Hezbollah have been fighting a low-grade war since Hezbollah fired on Israel after the start of the war in Gaza last year. Both sides are preparing for the possibility of an all-out war. Kat Lonsdorf, NPR News, Tel Aviv. President Biden is expected to speak with Israel's prime minister later today. A source familiar with the plan tells NPR. This is NPR.