Eastern Flank Strategic Partnership Act of 2025

This bill designates Bulgaria, Estonia, Finland, Hungary, Latvia, Lithuania, Poland, Romania, and Slovakia as "Eastern Flank strategic defense partners" due to their geographic proximity to Russia/Belarus/Ukraine and defense commitments. It requires the U.S. State and Defense Departments to prioritize these nations for existing security assistance programs (like Foreign Military Financing and defense equipment transfers), military exercises, and strategic stockpiling under the War Reserve Stocks program. The legislation mandates that these allies receive preferential treatment for defense cooperation, including equipment pre-positioning to enhance regional deterrence. It also requires a congressional briefing within 180 days of enactment detailing implementation plans and timelines.