Facing international condemnation and pressure to free the chief of Kamal Adwan Hospital, Israel released a brief interrogation video backing up its claim that militants used the hospital as a base.

The deal would secure release of a third of the approximately 100 hostages who remain in Gaza, including two dual U.S.-Israeli nationals. In return, Israel would release some Palestinian prisoners.

CAIRO — Israel and Hamas wrangled on Sunday over the details of a deal to halt fighting in the Gaza Strip and return hostages home, as Palestinian officials said intensified Israeli bombardments had killed more than 100 people over the weekend.