Summary: The U.N. Security Council Sanctions Committee has not fulfilled its responsibilities for monitoring how U.N. member states are implementing economic sanctions against Serbia and investigating alleged violations, nor have the nations bordering Serbia had the help needed to enforce the sanctions. Although economic sanctions have disrupted the Serbian economy, they have not caused Serbia to abandon its aggressive policies toward its former Yugoslav neighbors. Some strategic products--petroleum, for example--continue to reach Serbia-Montenegro, and hundreds of other sanction violations are suspected. No coordinated international effort has been made to monitor the sanctions' implementation, identify and document weaknesses, or recommend corrective action. The United States, the European Community, and the U.N. are considering several options, including improving the monitoring of goods en route to Serbia-Montenegro; increasing resources and technical help to border countries; tightening financial sanctions; and increasing investigations, prosecutions, and publicity to deter violations.