Key Facts
- Start date
- 2014, following Russia's invasion of Ukraine
- Primary funding mechanism
- European Deterrence Initiative (until 2022)
- Secondary funding
- Ukraine Security Assistance Initiative (USAI) from 2022
- Scope
- Air, ground, and naval presence augmentation across NATO's eastern flank
- Status (Q1 2025)
- Ongoing; no mission objective changes after U.S. administration change
Strategic Narrative Overview
Operation Atlantic Resolve involved rotating U.S. ground, air, and naval forces through NATO's eastern member states on a persistent basis. Activities included augmenting previously scheduled military exercises and establishing a regionally aligned headquarters to oversee rotations. Funding flowed through the European Deterrence Initiative. After Russia's full-scale invasion of Ukraine in 2022, the Ukraine Security Assistance Initiative partially assumed funding responsibilities, broadening the operation's scope.
01 / The Origins
Russia's annexation of Crimea and military intervention in eastern Ukraine in 2014 alarmed NATO members, particularly those on the alliance's eastern flank. The United States and the United Kingdom responded by reassessing deterrence posture in Central and Eastern Europe. Operation Atlantic Resolve was initiated to signal commitment to NATO collective defense, reinforce allied confidence, and counter Russian military assertiveness through persistent rotational deployments and enhanced exercises.
03 / The Outcome
As of early 2025, Operation Atlantic Resolve remains ongoing with no defined end state. USEUCOM confirmed in the first quarter of 2025 that the U.S. administration change did not alter mission objectives. The operation continues to function as the primary framework for persistent American military presence in Eastern Europe, sustaining deterrence against further Russian aggression along NATO's eastern flank.
Belligerents & Mobilization Analysis
Side A
3 belligerents