Israel is bombing targets across many parts of Lebanon, striking senior militants in Beirut and apparently hiding bombs in pagers and walkie-talkies. Hezbollah is firing rockets and drones deep into northern Israel, setting buildings and cars alight.
But no one is calling it a war - not yet.
Israeli officials say they are not seeking war with Hezbollah and that it can be avoided if the militant group halts its attacks and backs away from the border. Hezbollah also says it doesn't want a war but is prepared for one - and that it will keep up the strikes on Israel that it began in the wake of ally Hamas' Oct. 7 attack until there is a cease-fire in Gaza.
Israel and Hezbollah have repeatedly traded fire since then - but the intensity rose to another level Monday, when Israeli airstrikes killed more than 180 people, according to Lebanese officials. That would make it the deadliest day in Lebanon since Israel and Hezbollah last went to war in 2006.
"If someone had told me or most analysts in summer 2023 that Hezbollah is striking Israeli bases in Israel, and Israel is striking southern Lebanon and parts of southern Beirut, I would have said, okay, that's an all-out war," said Andreas Krieg, a military analyst at King's College London.