Coba jelasin Lihat juga dari Perluasan NATO dalam bahasa melayu dong

Goldgeier, James. "NATO Enlargement and the Problem of Value Complexity." Journal of Cold War Studies (2020) 22#4 pp 146–174

Spohr, Kristina. "Precluded or precedent-setting? The 'NATO enlargement question' in the triangular Bonn-Washington-Moscow diplomacy of 1990–1991." Journal of Cold War Studies 14.4 (2012): 4-54. online

Trachtenberg, Marc. "The United States and the NATO Non-extension Assurances of 1990: New Light on an Old Problem?" International Security 45:3 (2021): 162–203. https://doi.org/10.1162/isec_a_00395 and online commentary on H-DIPLO 2021