A round of high-level talks in Cairo meant to bring about a cease-fire and hostage deal to at least temporarily end the 10-month Israel-Hamas war in Gaza ended Sunday without a final agreement, a U.S. official said. The talks included CIA director William Burns and David Barnea, the head of Israel’s Mossad intelligence agency. A Hamas delegation was briefed by Egyptian and Qatari mediators but did not directly take part in negotiations.