Israel and Hezbollah each have strong incentives to heed international calls for a cease-fire that could avert all-out war — but that doesn't mean they will.

Hezbollah is reeling after a sophisticated attack on personal devices killed and wounded hundreds of its members. Israeli airstrikes have killed two top commanders in Beirut in less than a week, and warplanes have pounded large parts of Lebanon, killing over 600 people.

When she first heard about the evacuation warnings Israel was sending to residents of Lebanon, Aline Naser's thoughts immediately turned to Gaza.

For the past year, the 26-year-old Beirut resident has been following with horror the reports about besieged Palestinians in the Gaza Strip ordered to move from one place to the other, fleeing to "humanitarian zones" only to be bombed and ordered to leave again.

By Mireille Rebeiz, Dickinson College

Lebanese families have been fleeing the country's south in the thousands amid escalating tensions and an Israeli bombardment that has so far killed hundreds.

Fadi, a type of rocket used for the first time by Hezbollah against Israel, has more explosive power and range than rockets deployed previously, but lacks precision, experts say.

World leaders on Tuesday sounded the alarm over fears of a wider war after Lebanon suffered its deadliest day in two decades due to Israeli air strikes on Hezbollah strongholds.

After nearly a year of cross-border fire since the Gaza war erupted, Israeli bombardment on Monday killed 558 people in Lebanon, including 50 children, according to the country’s health ministry.

The relentless exchanges of fire between Israel and Lebanon's Hezbollah of recent days have stoked fears the longtime foes are moving inexorably towards all-out war, despite international appeals for restraint.

AFP correspondents in Jerusalem and Beirut talked to officials and analysts who told them what the opposing sides hope to achieve by ramping up their attacks and whether there is any way out.

Israel is bombing targets across many parts of Lebanon, striking senior militants in Beirut's southern suburbs 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.

Hezbollah supporters in Lebanon turned out in force Sunday for the funeral of a top commander killed in an Israeli air strike, in a major show of support for the Iran-backed group.

Hezbollah has hailed commander Ibrahim Akil as "one of its great leaders", saying the 61-year-old died in an "Israeli assassination... in Beirut's southern suburbs" on Friday.

For almost a week, ophthalmologist Elias Jradeh has worked around the clock, trying to keep up with the flood of patients whose eyes were injured when pagers and walkie-talkies exploded en masse across Lebanon.

He has lost track of how many eye operations he has performed in multiple hospitals, surviving on two hours of sleep before starting on the next operation. He has managed to save some patients' sight, but many will never see again.

Doctors in Lebanon spoke of horrific eye injuries and finger amputations, a day after Hezbollah paging devices exploded across the country, killing 12 people and wounding up to 2,800.

"The injuries were mainly to the eyes and hands, with finger amputations, shrapnel in the eyes -- some people lost their sight," said doctor Joelle Khadra, who was working in emergency at Beirut's Hotel-Dieu hospital.