This bill, titled the "REPO Implementation Act of 2025," aims to strengthen the existing framework for utilizing Russian sovereign assets to support Ukraine. It specifically amends the Rebuilding Economic Prosperity and Opportunity for Ukrainians Act to improve the implementation of asset seizure and repurposing. A significant change allows the President to transfer Russian aggressor state sovereign assets into the Ukraine Support Fund for investment purposes without requiring their immediate confiscation . This provision facilitates the placement of these funds into interest-bearing accounts. To ensure these funds generate returns, the bill mandates the Secretary of the Treasury to invest portions of the Ukraine Support Fund not needed for immediate withdrawals into interest-bearing U.S. obligations. The interest and proceeds from these investments will be credited back to the fund, enhancing its value. Furthermore, the Secretary of State is required to obligate and expend at least $250,000,000 from the Fund for assistance to Ukraine every 90 days, ensuring a consistent flow of aid. The legislation also emphasizes international cooperation by requiring the President to submit reports detailing Russian sovereign assets held in "covered countries," including G7 and EU members, and other foreign nations. These reports must specify asset amounts, descriptions, and their status (frozen, blocked, or accruing interest). Additionally, it expresses a sense of Congress that the Secretary of State should initiate robust diplomatic efforts to persuade covered countries to repurpose at least 5% of their held Russian sovereign assets quarterly for Ukraine's benefit.