rity services of State Parties in order to address : (i) cross border crime; and (ii) promote a community based approach to domestic security; j) observe, and encourage State Parties to implement, United Nations, African Union and other international conventions and treaties on arms control, disarmament and peaceful relations between states; k) develop peacekeeping capacity of national defence forces and co-ordinate the participation of State Parties in international and regional peacekeeping operations; and l) enhance regional capacity in respect of disaster management and co-ordination of international humanitarian assistance. Article 3 Structures 1. The Organ shall be an institution of SADC and shall report to the Summit. 2. The Organ shall have the following structures: a) the Chairperson of the Organ; b) the Troika; c) a Ministerial Committee; d) an Inter-State Politics and Diplomacy Committee (ISPDC); e) an Inter-State Defence and Security Committee (ISDSC); and f) such other sub-structures as may be established by any of the ministerial committees. 3. The Troika shall consist of; (a) the Chairperson of the Organ; (b) the Incoming Chairperson who shall be the Deputy Chair-person of the Organ; and (c) the Outgoing Chairperson. 56