A day of national mourning was interrupted by hecklers who blamed government officials for failing to secure the release of hostages still being held by Hamas.
A joint Israeli-Palestinian memorial ceremony was held to honor victims of the Israel-Hamas conflict. About 150 families have joined a group of bereaved Israelis and Palestinians despite criticism.
Hamas's leader in Gaza is considered an architect of the Oct. 7 attacks that prompted Israel to retaliate. As mediators seek a cease-fire, a deal depends on Mr. Sinwar as well as his Israeli foes.
