Headline: Ignored Warnings: How NATO Expansion Led To The Current Ukraine TragedyPublication Date: Thursday, February 24, 2022Primary Source: 19FortyFiveType: op-edFormat: Newspaper (Online)Nature of Mention: authoredScholar: Carpenter, Ted GalenResearch Area: Foreign Policy and National SecurityInternational Economics and DevelopmentSubjects: NATO's expansion leading to Ukraine invasionAttached Files: Carpenter_1945_nato.pdf