High-level cease-fire talks appeared to be gaining momentum on Monday as Arab and American mediators pressed for an agreement to halt the fighting in Gaza and release hostages held by Hamas before President-elect Donald J. Trump assumes office on Jan. 20.
It was still unclear whether the parties had reached resolution on central disputes that have proved insurmountable in previous rounds of negotiations, but officials briefed on the talks have expressed cautious optimism in recent days about the possibility of concluding a deal.
For months, repeated rounds of talks have seen hopes rise only to be dashed days later, with both Israel and Hamas blaming the other for the impasse.
If a deal is achieved, it would bring some respite to Palestinians in Gaza, who have endured miserable conditions in displacement camps and relentless bombardments by Israel, and the families of hostages taken from Israel, who have suffered for months wondering about the fate of their loved ones.
