Acting under Chapter VII, the Council imposed an arms embargo on Serbia and Montenegro, and established a Committee to monitor its implementation and suggest improvements. The measures would be revised if it noted in reports from the Secretary-General Kofi Annan, the Organization for Security and Co-operation in Europe, Contact Group and European Union that Serbia and Montenegro had begun a dialogue, withdrew its police forces, allowed access to humanitarian aid agencies and accepted missions from the OSCE and United Nations High Commissioner for Refugees to the region.[2]