The Palestinian Authority will take all necessary steps to fight terror in Gaza provided Israel withdraws completely and gives hope there will be negotiations over a Palestinian state and more pullbacks from the West Bank, Palestinian National Security Adviser Jibril Rajoub told The Jerusalem Post. But another PA official said Hamas was preparing to push the PA into civil war to gain control over Gaza and weaken the PA in the West Bank. "The killing of Moussa Arafat was a clear sign that Hamas and other extremists want to create total chaos and push the PA into civil war," the PA source said. "We have information that those behind the attack were close to Hamas and know that they want to target other senior security chiefs." While Hamas wants to participate politically, they will try to keep the conflict burning in the West Bank with extremists from Fatah and Islamic Jihad, the source added. According to PA security sources, the killing of Moussa Arafat by members of the National Resistance Committee has exposed the weakness of the PA in the Gaza Strip, where chaos is spreading.