Palestinian President Mahmoud Abbas promised Lebanese Prime Minister Najib Mikati his support for Lebanon in the implementation of UN Security Council Resolution 1559, which stipulates that Palestinian factions in Lebanese camps be disarmed. During a meeting with the Lebanese prime minister on Monday in Brazil on the sidelines of the Arab League-South American Summit, Abbas assured Mikati the Palestinian Authority would back Lebanon in its decision regarding the disarmament of the Palestinian refugee camps. The meeting was attended by Palestinian Foreign Minister Nasser al-Qidwa and the Palestinian president's advisor Nabil Abu Rudayna. Commenting on the meeting, Mikati said: "Our meeting today with the Palestinian president gave us true hope in the establishment of peace." Mikati also met with Secretary General of the Arab League Amr Moussa, in the presence of Lebanese Foreign Minister Mahmoud Hammoud. Following the meeting, Moussa said: "We have discussed issues related to the Arab world." He added: "As the secretary general of the Arab League, I am concerned about the future and the interests of Lebanon."