In a sign of the new ease of travel, leaders from Egypt's banned but tolerated Muslim Brotherhood movement watched Friday as hundreds of armed militants from Hamas paraded through the ruins of a former Jewish settlement. Nizar Rayan, a Hamas leader, urged a huge crowd of supporters to welcome the Brotherhood visitors from Egypt, as more than a thousand Hamas militants marched, brandishing M-16s and rocket-propelled grenade launchers. A masked Al-Qassam leader threatened Israel with fresh attacks unless it withdrew from all occupied Palestinian territory, not just the Gaza Strip. "We tell our criminal enemies: leave our land before our army comes to you," he said.