Are Gulf states running out of missile interceptors? | The Economist

Defensive Capabilities and Readiness

• Israel possesses comprehensive, multi-layered air defenses, including Iron Dome (short-range), David Sling (medium-range), and Arrow (high-altitude/stratospheric interception).
• GCC nations (Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, UAE) possess significant US-made interceptors, specifically Patriot PAC-3 and THAAD systems, capable of engaging high-velocity ballistic missiles.
• Iran is estimated to possess 2,000–2,500 theater ballistic missiles capable of striking Israel, Gulf states, Turkey, and Cyprus.

Interceptor Stockpiles and Consumption Rates

• Iran has fired approximately 400 ballistic missiles at Arab nations in the first few days of the conflict.
• Assuming a standard engagement ratio of two interceptors per incoming missile, Arab states have expended at least 800 interceptors.
• UAE inventory likely included ~1,000 PAC-3 interceptors ordered over the last 15 years; however, specific stock numbers for Saudi Arabia remain undisclosed.
• Current consumption rates are unsustainable: Patriot PAC-3 production is approximately 600 units annually (planned to scale to 2,000 by 2032), while Arrow production is currently ~96 units (planned to scale to 400).
• Iran's launch rate has dropped ~86% from the conflict's first day and ~23% between Tuesday and Wednesday, according to US Joint Chiefs Chairman Gen. Dan Caine.
• Low-flying Shahed 136 drones force the use of expensive long-range interceptors, further straining limited stocks despite the existence of cheaper counter-drone systems.

Projected Shortages and Operational Rationing

• At sustained initial launch rates, air defense stockpiles would be depleted in under a week; projections suggest shortages may emerge within 10–12 days.
• Anticipated consequences of depletion include:
  • Rationing of interceptor usage by target type (e.g., prioritizing military over civilian or diplomatic sites).
  • Increased success rates for Iranian missiles breaching defenses.
  • Escalation of attacks on high-value targets, such as the US consulate in Dubai, the US mission in Riyadh, and American radar installations in Qatar.
  • Casualties among US personnel (six troops already killed) and potential destabilization of Gulf state political and economic models.
• Gulf states face strategic dilemmas similar to Ukraine, requiring choices between defending cities, frontline troops, or energy grids due to insufficient coverage.

Global Strategic Implications

• Sustained conflict will deplete US stockpiles available for allies in other theaters, specifically impacting Pacific forces and European defense efforts.
• US production capacity constraints are exacerbating shortages for allies attempting to supply Ukraine; Germany recently had an interceptor request denied.
• Current conflict dynamics are forcing a global reassessment of air defense preparedness, highlighting the long-term unsustainability of current production rates against high-intensity missile barrages.
• High attrition rates among Iranian missile crews indicate operational difficulties, yet the potential for Iran to conserve missiles for overwhelming, sustained salvos remains a critical threat vector.