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This 53rd edition of the SIPRI Yearbook covers developments during 2021, including:
- Armed conflict and conflict management, with an overview of armed conflict and peace processes across the Americas, Asia and Oceania, Europe, the Middle East and North Africa, and sub-Saharan Africa, as well as a focus on global and regional trends in peace operations
- Military expenditure, international arms transfers and developments in arms production
- World nuclear forces, with an overview of each of the nine nuclear-armed states and their nuclear modernization programmes
- Nuclear arms control, featuring developments in the Russian-United States strategic dialogue, Iran's nuclear deal and the multilateral nuclear arms control and disarmament treaties, including the entry into force of the Treaty on the Prohibition of Nuclear Weapons
- Chemical, biological and health security threats, including the impact of the Covid-19 pandemic, the investigation of allegations of chemical weapon use in Syria and developments in the internatio
chemical and biological warfare
- Conventional arms control and regulation of new weapon technologies, with a focus on inhumane weapons and other conventional weapons of humanitarian concern, including efforts to regulate autonomous weapon systems, state behaviour in cyberspace and space, and developments in the Open Skies Treaty
- Dual use and arms trade controls, including developments in the Arms Trade Treaty, multilateral arms embargoes and export control regimes, and review processes in the legal framework of the European Union for such controls as well as annexes listing arms control and disarmament agreements, international security cooperation bodies, and key events in 2021.