“ I sat in Alyth Gardens synagogue in Golders Green in north London last year. Two men went up on the stage. The first one spoke: “I am Ahmed, and I am a Palestinian. My son died in the Intifada, killed by an Israeli bullet. I come to wish you all Shabbat Shalom.” Then the other man spoke: “I am Moishe, and I am an Israeli. My son also died in the Intifada, killed by a homemade petrol bomb thrown by a Palestinian teenager. I come to wish you all Salaam Alaikum.