External Affairs, including: relations and communications with overseas governments; treaties, including trade agreements; bilateral, regional and multilateral trade policy; international trade and commodity negotiations; trade promotion; international development co-operation; diplomatic and consular missions; international security issues, including disarmament, arms control and nuclear non-proliferation; public diplomacy, including information and cultural programs; international expositions; provision of secure travel identification to Australian citizens ; provision of consular services to Australian citizens abroad; overseas property management, including acquisition, ownership and disposal of real property.