Symposia on the whole range of specialist areas addressed by Interpol are organized by the individual General Secretariat departments concerned. International co-operation to prevent such offences or bring the offenders to justice is often regulated by international conventions, but not all countries have ratified those conventions. In response to requests from the Interpol General Assembly or at the invitation of other international organizations and conferences, the General Secretariat has prepared reports on various aspects of international crime. The subjects dealt with in these reports include international fraud, unlawful interference with civil aviation, international exploitation of prostitution and traffic in human beings, theft of and traffic in cultural property, illicit traffic in endangered species of flora and fauna, and the legal aspects of currency counterfeiting. It also tries to encourage and assist the police forces of Member States to organize or expand their crime prevention activities.
Crime prevention appears on the agendas of many symposia and conferences.
Similarly, studies have been conducted on prevention problems or have referred to crime prevention in connection with other topics. Reports have been produced at various times on the sale, possession, carrying, use, import and export of firearms. In this connection, it should be noted that the 1957 European Extradition Convention provides that the Contracting Parties can use the Interpol machinery to transmit requests for provisional arrest. Directorate 3 sends circulars to all NCBs describing the measures that can be taken by the police of a particular country when they locate an offender who is the subject of an arrest warrant issued in another country with a view to his extradition. In addition, the Directorate collects the texts of national extradition laws and circulates them to the NCBs.