Israel and Hamas are believed to have agreed that 10 living hostages and the remains of 18 others should be released during the first 60 days of a cease-fire, but they have not reached a consensus on how many Palestinian prisoners should be freed during the same period. Up to 20 hostages are still thought to be alive.

Israel’s bid to crush Hamas’s capabilities and bring the hostages home dominated talks between Benjamin Netanyahu and Donald Trump, the Israeli prime minister said, even as the Palestinian fighters vowed no surrender in Gaza.