1. Ahram, Ariel I. 2011. Proxy Warriors: The Rise and Fall of State-Sponsored Militias. Stanford, CA: Stanford University Press.
2. Amstutz, Mark R. 2008. International Ethics: Concepts, Theories, and Cases in Global Politics. 3rd ed. Lanham, UK: Rowman and Littlefield.
3. Arabia, Christine L., Andrew S. Bowen, and Cory Welt. “U.S. Security Assistance to Ukraine.” Congressional Research Service, October 5, 2023. https://crsreports.congress.gov/product/pdf/IF/IF12040#:~:text=According%20to%20DOD%2C%20USAI%20packages,UAS)%2C%20air%20surveillance%20systems%2C
4. Aristotle. 1985a. Politics. Translated by Jonathan Barnes. The Complete Works of Aristotle. Princeton, NJ: Princeton University Press.
5. Aristotle. 1985b. Nicomachean Ethics. Translated by Terence Irwin. Cambridge, UK: Hackett Publishing.