The United States has approved a proposed Foreign Military Sale valued at up to three billion dollars to support the sustainment of Saudi Arabia’s F-15 fighter jet fleet, a move that underscores the enduring defence partnership between Washington and Riyadh.

The U.S. State Department’s determination authorises the Defence Security Cooperation Agency to notify Congress of the proposed sale, beginning the formal review process ahead of potential final contracts.

The package, requested by Saudi Arabia, is focused on sustainment and support rather than procurement of new aircraft, and includes spare parts, repair services, software and classified and unclassified system updates, ground and personnel equipment, documentation, and associated training and logistics support services.

U.S. officials have characterised the sale as consistent with broader foreign policy and national security objectives by enhancing the defence capabilities of a Major non-NATO Ally that plays a significant role in Gulf stability.

Riyadh operates one of the largest F-15 fleets outside the United States, incorporating F-15SA and other variants that serve as the backbone of its airpower.

Ensuring the long-term readiness and operational availability of these aircraft is central to Saudi Arabia’s air defence posture as regional security dynamics evolve.

The proposed sale is not expected to alter the overall military balance in the Middle East, according to official notifications, and it aligns with recent major U.S. defence sales to the Kingdom, including approval of advanced Patriot air defence missiles and other systems.

If Congress does not object within the statutory review period, negotiations between the U.S. government and Saudi Arabia can proceed toward finalisation of the sustainment agreement, which defence planners view as critical to maintaining interoperability and high readiness levels for both Saudi and allied forces in a complex strategic environment.