Hameed Hussien, Amer. “The Expansion of NATO in Eastern Europe and the Geopolitics of the Ukrainian Crisis (a Study in Cooperation and Challenges)”. Al-Kitab Journal for Human Sciences 5, no. 8 (December 15, 2022): 71–98. Accessed October 22, 2026. https://isnra.net/index.php/KJHS/article/view/763.