Although Israel defines itself as a Jewish state, what that means in practice is subject to dispute, with religious and secular Jews constantly tugging for greater clout…. The latest battle is over demands that buses segregate men and women in accordance with strict Jewish law on a line connecting the ultra-Orthodox stronghold of Mea Shearim in Jerusalem with the Western Wall. In the view of some ultra-Orthodox Jews, segregated seating, with women entering separately through the rear door and sitting at the back, is vital to uphold their stringent traditions stipulating modesty and prohibiting physical contact with members of the opposite sex.