Palestinian leaders decided on Saturday to seek sessions of the UN Security Council and the Arab League, hoping for action to halt Israeli settlement.A statement by the executive committee of the Palestine Liberation Organisation said continued settlement growth in the occupied West Bank and east Jerusalem was liable "to destroy all chances of a peace process and the two-state solution."The international peacemaking Quartet of the United Nations, the United States, Russia and the European Union has given the parties until January 26 to submit comprehensive proposals on territory and security.Israeli construction of settlements in east Jerusalem and the West Bank is one of the thorniest issues of the Israeli-Palestinian conflict, scuppering direct negotiations between the sides that began in September 2010 and ground to a halt shortly afterwards when a 10-month Israeli settlement freeze ended.Israel declined to renew the freeze and the Palestinians say they will not hold talks while settlement construction continues.