Saudi Arabia Expands Ballistic Missile Plant to Build Larger Solid-Fuel Weapons

Between April 2025 and September 2026, commercial satellite imagery captured the construction of a new, heavily fortified casting facility at Saudi Arabia's al-Duwadimi missile complex. The expansion, located roughly 200 kilometers west of Riyadh, effectively doubles the footprint of the site's solid-propellant motor production infrastructure.[2][4][5]

Researchers Sam Lair and Michael Duitsman from the Foreign Policy Research Institute identified the new structures by analyzing high-resolution captures from Planet Labs. They concluded the primary building is designed to house deep casting pits, where volatile solid-fuel ingredients are poured into missile motor casings and left to harden.[2][3][4]

A second newly erected building on the perimeter likely serves as a dedicated storage site for precursor materials or finished missile components. Heavy-duty blast-diversion walls surround the primary casting structure, a standard industrial safety measure intended to protect adjacent infrastructure from accidental ignition during the curing process.[2][4]

The physical dimensions of the new casting pits suggest a deliberate shift in manufacturing parameters. Because the new facility is at least twice as large as the complex's original casting building, analysts assess it is engineered to produce larger solid-fuel motors capable of carrying heavier payloads or reaching significantly greater distances.[2][3][4]

Shifting the deterrence architecture

The infrastructure upgrade signals a material change in how Riyadh plans to project power across the Persian Gulf. Saudi Arabia currently relies heavily on its fleet of US-supplied F-15 fighter jets to maintain conventional deterrence, a posture that requires manned aircraft to penetrate hostile airspace to deliver precision ordnance.[2][4]

Sascha Bruchmann, a research fellow at the International Institute for Strategic Studies, noted that longer-range ballistic missiles would allow Saudi forces to strike distant targets without exposing aircraft to advanced air defense networks. This capability directly addresses a structural vulnerability in the kingdom's current military architecture.[2][4]

"You'd want a system to threaten whatever is holy to Tehran if you don't have the political will to send an F-15 with JDAMs over Tehran," Bruchmann observed. He added that while Iran currently holds a distinct advantage with its own missile forces, the Saudis could use this facility to close that capability gap.[2][4]

The enhanced missile capability also holds direct implications for Saudi Arabia's ongoing security challenges along its southern border. A deeper arsenal of domestically produced precision missiles could strengthen Riyadh's position against Yemen's Ansarallah movement, commonly known as the Houthis, who have repeatedly targeted Saudi energy infrastructure with Iranian-supplied munitions.[4][5]

Solid-fuel systems are specifically prized by military planners for their high operational readiness. Unlike older liquid-fueled missiles, which must be fueled immediately prior to launch in a time-consuming and highly visible process, solid-propellant missiles can remain in storage for years and be fired on extremely short notice.[2][4]

The al-Duwadimi expansion is not an isolated national project, but part of a broader regional procurement trend driven by localized security fears. Decker Eveleth, an analyst at the CNA research organization, observed that similar domestic missile production efforts are currently underway in the United Arab Emirates and Turkey.[2][4]

Technological origins and diplomatic friction

The technological foundation of the Saudi missile program remains closely tied to Beijing, reflecting a decades-long procurement relationship. Experts from multiple defense intelligence organizations assess that the manufacturing techniques visible at al-Duwadimi rely heavily on Chinese ballistic missile technology and engineering assistance.[1][2][4]

While the exact systems slated for the new casting pits remain unconfirmed, researchers suggest the kingdom may already be manufacturing the Chinese-designed DF-15 short-range ballistic missile. The expanded facility could theoretically support the production of the longer-range DF-21 system, a medium-range ballistic missile, or a comparable domestic variant.[3][5]

The Istituto Analisi Relazioni Internazionali notes that while rivalry with Iran is a primary driver, the expansion also reflects a broader Saudi industrial policy aimed at defense autonomy. The kingdom is systematically attempting to reduce its historical reliance on Western military hardware and the political conditions frequently attached to those sales.[1]

Defense intelligence firm Janes reviewed the satellite analysis and corroborated the findings, stating the new structures strongly suggest an effort to support the development of longer-range missiles. This independent verification adds weight to the assessment that Riyadh is moving beyond mere procurement and into sustained domestic mass production.[2][4]

This drive for autonomy carries immediate diplomatic consequences in Washington, where lawmakers are closely monitoring Saudi military developments. The visible expansion of a sovereign ballistic missile program introduces new friction into ongoing negotiations over a proposed US-Saudi civilian nuclear cooperation agreement.[2][4]

Critics in the US Congress have consistently argued that providing Riyadh with nuclear technology carries unacceptable proliferation risks. A demonstrated capacity to manufacture long-range delivery vehicles natively will likely stiffen bipartisan opposition to any deal that lacks stringent non-proliferation safeguards and intrusive inspection protocols.[2][4]

Maintaining strategic ambiguity

The Saudi government has maintained a strict policy of ambiguity regarding the al-Duwadimi site and its broader strategic rocket forces. Neither the Saudi embassy in Washington nor the Ministry of Information has issued a public statement confirming the purpose of the new construction or the specific missile classes intended for production.[4][5]

Ultimately, the strategic impact of the facility will depend on when the new casting pits become fully operational and begin yielding finished motors. Researchers estimate the expanded production line could be ready to begin manufacturing larger solid-fuel systems by the end of 2026, marking the next verifiable checkpoint in the region's shifting military balance.[3][5]