Underlines the importance of partnership and cooperation with relevant regional and subregional organizations and arrangements, in accordance with Chapter VIII of the Charter of the United Nations, in supporting peacekeeping operations, including on issues relating to the protection of civilians, taking into account the respective mandates of peacekeeping operations, and peacebuilding activities as well as forging greater regional and national ownership, and furthermore, reiterates that the growing contribution made by regional and subregional organizations can usefully complement the work of the United Nations in maintaining international peace and security, and stresses in this regard that such contribution must be made in accordance with Chapter VIII of the Charter of the United Nations, including the need for regional and subregional organizations at all times to keep the Security Council fully informed of activities undertaken or in contemplation for the maintenance of international peace and security;