Administrative and legal framework for the activities of international joint investigation teams

At the current stage of globalization and the rapid spread of transnational organized crime, the issue of effective interaction between law enforcement agencies of different states in combating crimes of an international nature is becoming particularly relevant. One of the key forms of such cooperation is the establishment and operation of Joint Investigation Teams (JITs), which are regulated by relevant international and national legal acts. In the context of contemporary security challenges and the armed aggression against Ukraine, the involvement of Ukrainian law enforcement officers in the activities of such teams acquires special significance. Today, it is critically important to enhance the effectiveness of investigations into crimes, especially those of a transnational nature, which require joint collection of evidence, rapid information exchange, and coordination of actions among the competent authorities of different countries. Ukraine’s participation in JITs is an essential component of its integration into the European legal space and confirms the state’s commitment to effectively fulfilling its international obligations in the field of criminal justice. This article explores the administrative and legal foundations for the establishment and functioning of Joint Investigation Teams, the mechanisms of coordination between participating states, forms of cooperation and information exchange, as well as the legal status of JIT members. Particular attention is given to the analysis of international legal instruments such as the Convention on Mutual Assistance in Criminal Matters between the Member States of the European Union, the Second Additional Protocol to the European Convention on Mutual Assistance in Criminal Matters, as well as Ukraine’s national legislation, including the provisions of the Criminal Procedure Code of Ukraine, the Law of Ukraine “On International Cooperation in Criminal Proceedings,” and other regulatory acts. The article also examines Ukraine’s participation in JITs established jointly with EU Member States, the International Criminal Court, and other international partners for the investigation of serious crimes committed on the territory of Ukraine in connection with the armed aggression of the Russian Federation. In this context, the importance of international solidarity and the consolidation of efforts of democratic states in ensuring the effective investigation of war crimes, crimes against humanity, and acts of genocide is emphasized. The establishment and effective functioning of JITs is not only a means of promptly investigating complex crimes, but also a tool for strengthening the international legal system, enhancing trust between states, and ensuring the inevitability of criminal liability for the most serious crimes. Prospects for improving the administrative and legal regulation of JIT activities are linked to the need for harmonization of legislation, strengthening the institutional capacity of law enforcement agencies, and enhancing international cooperation in the field of criminal justice.