Israeli strikes on Monday killed more than 270 Lebanese in the deadliest barrage since the 2006 Israel-Hezbollah war as the Israeli military warned residents in southern and eastern Lebanon to evacuate their homes ahead of a widening air campaign against Hezbollah, AP reports.

Thousands of Lebanese fled the south, and the main highway out of the southern port city of Sidon was jammed with cars heading toward Beirut in the biggest exodus since the 2006 fighting. More than 1,000 other people were wounded in the strikes — a staggering one-day toll for a country still reeling from a deadly attack on communication devices last week.

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.