Open this photo in gallery: A picture of a child, Kfir Bibas, who has been taken hostage by Palestinian Islamist group Hamas is placed next to Israeli President Isaac Herzog, as he attends the 54th annual meeting of the World Economic Forum, in Davos, Switzerland, on Jan. 18.DENIS BALIBOUSE/Reuters Normalizing ties between Israel and Saudi Arabia would be a key element of ending the war with Hamas and a game-changer for the entire Middle East, Israeli President Isaac Herzog said Thursday at the World Economic Forum’s annual meeting in the Swiss town of Davos. “It’s still delicate, it’s fragile, and...