Air raid sirens echoed across Tel Aviv on Wednesday as United States Secretary of State Antony Blinken prepared to end a visit. Smoke, apparently from an intercepted projectile, could be seen in the sky above the hotel where Blinken was staying.

Blinken urged Israel to use its recent tactical victories against Hamas to seek a war-ending deal and bring back dozens of hostages, before leaving Wednesday for Saudi Arabia as part of his 11th visit to the region since the start of the Israel-Hamas war.

Both sides appear to be dug in. Israeli Prime Minister Benjamin Netanyahu has pledged to annihilate Hamas and recover dozens of hostages held by the group. Hamas says it will only release the captives in return for a lasting cease-fire, a full Israeli withdrawal from Gaza and the release of Palestinian prisoners.

On Oct. 7, 2023, Hamas-led militants blew holes in Israel’s security fence and stormed in, killing some 1,200 people — mostly civilians — and abducting another 250. Israel’s offensive in Gaza has killed over 42,000 Palestinians, according to local health authorities, who do not differentiate between militants and civilians. The war has destroyed large areas of Gaza and displaced about 90% of its population of 2.3 million people.

On Wednesday, the World Health Organization postponed the third phase of a polio vaccine campaign in the besieged Gaza Strip, saying the current conditions made it “impossible for families to safely bring their children for vaccination.”