A/RES/50/81 Page 28 seminars and advisory services are among the measures which can be provided on request at the regional level to promote, implement and evaluate youth programmes. 120. Regional non-governmental youth organizations, regional offices of bodies and organizations of the United Nations system and regional intergovernmental organizations concerned with youth are invited to consider meeting on a biennial basis to review and discuss issues and trends and to identify proposals for regional and subregional cooperation. United Nations regional commissions are also invited to play an essential role through the provision of a suitable venue and appropriate input regarding regional action. C. International cooperation 121. An essential role for international cooperation is to promote conditions conducive to the implementation of the Programme of Action at all levels. Means available include debates at the policy level and decisions at the intergovernmental level, global monitoring of issues and trends, data collection and dissemination of information, research and studies, planning and coordination, technical cooperation and outreach and partnership among interested constituencies from both the non-governmental and private sectors. 122. In its capacity as the subsidiary body of the Economic and Social Council responsible for global social development issues, the Commission for Social Development has an important role to play as the focal point for the implementation of the Programme of Action. The Commission is called upon to continue the policy-level dialogue on youth for policy coordination and for periodic monitoring of issues and trends. 123. Current regional and interregional conferences of ministers responsible for youth affairs in Africa, Asia, Europe, Latin America and the Caribbean and Western Asia are invited to intensify cooperation among each other and to consider meeting regularly at the international level under the aegis of the United Nations. Such meetings could provide an effective forum for a focused global dialogue on youth-related issues. 124. Youth-related bodies and organizations of the United Nations system are invited to cooperate with the above-mentioned conferences. In this connection, the existing ad hoc inter-agency working group on youth should meet annually and invite all concerned bodies and agencies of the United Nations system and related intergovernmental organizations to discuss ways and means by which they can promote the implementation of the Programme of Action on a coordinated basis. 125. Effective channels of communication between non-governmental youth organizations and the United Nations system are essential for dialogue and consultation on the situation of youth and implications for the implementation of the Programme of Action. The General Assembly has repeatedly stressed the importance of channels of communication in the field of youth. The Youth Forum of the United Nations system could contribute to the implementation of the Programme of Action through the identification and promotion of joint initiatives to further its objectives so that they better reflect the interests of youth. 1. Data collection and dissemination of information 126. Capacities to collect, analyse and present data in a timely and accurate fashion are essential for effective planning and target-setting, for /...