Shin Bet security service agents have begun telephoning members of Palestinian terrorist organizations and warning them to leave their houses, so that they and their families will not be hurt when Israel bombs them, Palestinian sources said yesterday. According to the sources, Shin Bet agents have contacted members of various armed organizations over the last few days and warned them that Israel plans to attack their houses. The houses in question are being targeted because Israel believes that they are being used to store or manufacture weapons, including Qassam rockets and rocket-propelled grenades. Before dawn yesterday, the Israel Defense Forces...