I sat in the synagogue where I grew up last night, waiting to interview Colonel Richard Kemp, the retired senior officer of the British Army who served for nearly three decades across Northern Ireland, the Balkans, the Middle East, and Afghanistan. Our conversation would end a service marking the transition between Israel’s Memorial Day for its fallen and its Independence Day. A British Jew and a British Colonel, in a room full of emotion, pride, and more than a little apprehension, after a week in which multiple arson attacks on Jewish-linked sites have taken place in London. There was an...