Tensions between Israel and Hezbollah are mounting as both parties exchanged fire across the Lebanese border Sunday. The Israeli military said it fired into southern Lebanon after Hezbollah missiles were launched at an army base near the border, while Hezbollah said it was responding to a drone attack by Israeli forces. Hezbollah leader Sayyed Hassan Nasrallah said Monday that the exchange of fire had launched a “new phase” in the conflict with Israel and that the new focus would be on targeting Israeli drones that breach Lebanese airspace.