A thought experiment — Imagine that Hamas announces it will immediately cease and desist from firing missiles into Israel, that there will be no more such attacks in the future, and that it will release Gilad Shalit, the Israel soldier kidnapped two-and-a-half years ago and held incommunicado ever since - with not even the Red Cross allowed to see him. What would happen then? Moderate Israelis would pressure their government to make a reciprocal gesture — to stop the air attacks on Hamas' command and control centers, release Palestinian terrorists from Israeli jails and get serious peace talks under...