Eastern Europe Military Alliances International Alliances European Security Russia Defense Spending Regional Security U.S. Foreign Policy European Union European Defense Alliances U.S.-Russia Relations Security Alliances Membership Ukraine Military Aid US Foreign Policy Member States Russia Relations Allied Support Security Threats Ukraine's NATO Aspirations Russian Aggression Defense Alliances US Influence Western Alliances Allied Forces Collective Defense Turkey's Role Baltic Sea Security Global Security Security Council Military Presence U.S. Influence Turkey Membership Issues India-Russia Relations NATO Security Concerns International Law Western Allies Defense Strategies Eastern European Politics Russia-Ukraine Conflict Czechia's Membership Arms Supply Drone Incursions U.S.-Europe Relations Security Issues US Relations Ukraine's Membership Air Defense Systems US-NATO Relations Arctic Security Russian Enclave EU Membership Russia's Threats Ukraine Conflict Membership Criteria Ukraine's NATO Membership Ukraine-Russia Conflict NATO Member States Mutual Expulsions Membership Discussions NATO Membership EU Relations Accession Protocol NATO-Ukraine Council NATO Expansion Border Regions Security Guarantees Article 5 Weapon Supply Support for Ukraine Membership Applications EU Support for Ukraine Russian Military Drills Northern Flank Security
