Israel released 183 Palestinian prisoners on Saturday in the latest exchange for Israeli hostages held in Gaza, part of a ceasefire that has paused the war but whose future is uncertain.

If all of the hostages aren’t returned by Saturday at 12 o’clock, I think that’s an appropriate time, I would say cancel it,’ the president told reporters

The first phase of the ceasefire calls for the release of 33 hostages and nearly 2,000 prisoners, the return of Palestinians to northern Gaza and an increase in humanitarian aid to the devastated territory. Last week, wounded Palestinians were allowed to leave Gaza for Egypt for the first time since May.