1. Adamishin, A. 2013. The Yugoslav Prelude: A Prototype for Modern Approaches to ‘Peacemaking’. Russia in Global Affairs 3 (July–September). http://eng.globalaffairs.ru/number/The-Yugoslav-Prelude-16158.
2. Adomeit, H. 2007. Inside or Outside? Russia’s Policies Toward NATO, Working Paper FG 5 2007/1. Stiftung Wisshenschaft und Politik, German Institute for International and Security Affairs, January.
3. Andrew, C., and V.M. Mitrokhin. 1999. The Sword and the Shield: The Mitrokhin Archive and the Secret History of the KGB. New York: Basic Books.
4. Antonenko, O. 1999. Russia, NATO and European Security After Kosovo. Survival 41 (4): 124–144.
5. Arabia, C.L., A.S. Bowen, and C. Welt. 2022. U.S. Security Assistance to Ukraine. Congressional Research Service IF12040, August 2. https://crsreports.congress.gov/product/pdf/IF/IF12040.