The war between Israel and the Iran-backed Hezbollah in Lebanon marked the deadliest spillover of the Gaza war, rumbling across the frontier for months before escalating into a devastating Israeli offensive that wiped out the group's command and many of its fighters, along with much of its arsenal.

For Palestinians, the renewed strikes brought a sudden return to the carnage and terror of the 15-month-long war.

Israel's military launched a new ground offensive in Gaza, sending troops into areas they retreated from during a two-month ceasefire. This comes a day after airstrikes killed more than 400 people.