The fourth meeting within regional cooperation between the Ministry of Security of Bosnia and Herzegovina and the Office for Combating Drugs of the Republic of Serbia was held on the 18th of April 2019 in SARAJEVO. On this occasion the State Strategy for Narcotic Drugs Monitoring, Prevention and Suppression in Bosnia and Herzegovina 2018-2023 was considered, as well as the Strategy on Drug Abuse Prevention for the period of 2014-2023 in them Republic of Serbia. Additionally, representatives of the Office for Combating Drugs spoke about amendments of the Law on Psychoactive Controlled Substances in the Republic of Serbia which were made in 2018. Finally, experiences and information on new psychoactive substances were exchanged, as well as on cooperation so-far with the European Monitoring Centre for Drug and Drug Addiction (EMCDDA).