It was signed by 40 people. Among the signatories are former Shin Bet chiefs Yaakov Peri and Ami Ayalon, former Mossad Chief Danny Yatom and former IDF Chief Amnon Lipkin-Shahak, General (Res) Amram Mitzna, former minister Moshe Shahal and Yuval Rabin, son of slain Prime Minister Yitzhak Rabin. All 40 are considered to be affiliated with the political Left.[3][4][3]