This report aims to improve the understanding of the world's drug problem and to contribute towards fostering greater international cooperation for countering its impact on health, governance and security. It includes an updated overview of recent trends on production, trafficking and consumption for non-medical purposes of key controlled substances. It maintains a global overview of the baseline data and estimates on drug demand and supply and provides an analysis of the market for the different drugs. Comprised of six booklets, it reviews persistent challenges and emerging threats in drug markets; offers an analysis of socioeconomic inequalities and drug use disorders; and addresses other drug policy issues such as access to controlled medicines and alternative development. It also discusses the impact of COVID-19 (coronavirus) on drug markets, stating that the impact could be like the 2008 economic crisis