FILE – In this Oct. 3, 2019 file photo, Gideon Saar, attends the swearing-in of the new Israeli parliament in Jerusalem. For years, Saar had been one of Netanyahu’s most loyal and vocal supporters, serving as Cabinet secretary and government minister. Now the telegenic Saar, armed with near unrivaled political savvy and a searing grudge against his former boss, could prove to be Netanyahu’s greatest challenge in March elections. (AP Photo/Ariel Schalit, File)