China Supplies Advanced Military Tech to Iran Despite Diplomatic Rhetoric
A WSJ investigation reveals a massive commercial and security supply chain funneling Chinese drone and missile tech to Iran, despite Beijing's diplomatic rhetoric of peace.
A comprehensive investigation published by The Wall Street Journal reveals the dramatic scale of the commercial and security supply chain funneling technologies and components from China to Tehran for its drone and missile programs. According to the report, which is based among other things on an in-depth analysis of Iranian customs data, the gap between Beijing's diplomatic rhetoric and its actual activity is stark.
Last summer, precisely on the day a temporary ceasefire was signed between the US and Iran and Beijing boasted of its efforts to promote calm—including dozens of calls held by the Chinese Foreign Ministry and the direct intervention of President Xi Jinping to offer solutions to end the fighting—a plane arrived in Tehran from China. The aircraft carried a shipment bound directly for the Iranian Ministry of Defense containing electronic components designed to manufacture parts for unmanned aerial vehicles and advanced guidance systems for missiles.
Iranian customs data points to thousands of component shipments from China, flowing as part of a systematic network helping Tehran acquire advanced technologies with military uses. This revelation joins a series of reports and documents from recent months illustrating Iran's extensive rearmament efforts.
Among other things, Reuters reported in July, citing three sources familiar with the matter, that Iran is expected to receive a first shipment from a deal to acquire 300 to 400 Chinese-made mobile man-portable air-defense systems (MANPADS) of the QW-12 and FN-16 models, valued at an estimated $60 to $70 million. These systems, designed to target low-flying aircraft, helicopters, and drones, can be operated by small teams and are suitable for rapid deployment around defense facilities and strategic infrastructure.
The Chinese Foreign Ministry denied the allegations and claimed they were completely baseless, and the Ministry of Defense in Beijing stated it was unfamiliar with the information, while sources noted that despite the signing of the agreement, delivery dates, quantities, and implementation details could still change.
The logistical connection between the countries is not limited to the air route alone. According to the Reuters report, the shipments of the air defense systems were planned to depart from Ürümqi in western China and pass overland through Pakistan on their way to Iran. Two Western intelligence sources and an Iranian official confirmed that Tehran examined the use of overland routes for transferring military equipment and dual-use components to operate discreetly and minimize disruption risks, although Pakistan for its part denied any involvement in the transfer of air defense systems.
Meanwhile, a document from the US-China Economic and Security Review Commission revealed a maritime layer to the connection: two Iranian-owned cargo ships departed last March from the port of Gaolan in China, and as emerges from shipping data, satellite imagery, and expert analysis, they carried sodium perchlorate, which serves as a key precursor in the production of solid rocket fuel. An identical event was recorded as early as January 2025, when two Iranian ships were loaded with about 1,000 tons of the same material.
The US Commission determines that the nature of security cooperation between the superpower and the Iranian regime has shifted in recent years from the supply of heavy conventional weapons to the transfer of technologies and dual-use components, such as sensors, voltage converters, and semiconductors. These components were detected both in the drones of Iran's proxies in the Middle East and in the weapons supplied to Russia and used by it in the war in Ukraine.
Against these networks, Washington is acting directly, with the US Treasury Department imposing sanctions on the Chinese company Yushita, which assisted in attempts to acquire shoulder-fired missiles, on Hitex Insulation, which supplied carbon fiber and aerospace materials to the Islamic Revolutionary Guard Corps, and on a procurement network from China and Hong Kong that smuggled components for nuclear research and ballistic missiles through front companies and covert financial channels.
In an attempt to choke off the aerial supply route, the US Treasury Department imposed a series of severe sanctions on the Iranian aviation industry on September 8 and suspended civil aviation reliefs. US Treasury Secretary Scott Bessent warned that starting September 23, heavy secondary sanctions would be applied to international entities continuing to service Iranian airlines, including airports, ground services, refueling, and cargo, while threatening direct damage to their access to the US financial system and dollar-denominated trade.
The impact on the ground is already felt immediately, as Iraq ordered the suspension of Iranian flights to Baghdad and cancellations and disruptions were recorded in Iranian flights to other destinations across the region, a fact that significantly reduces Tehran's ability to use the commercial aviation network to transfer international cargo and equipment.
However, aviation sanctions alone do not constitute a complete blockade of the Sino-Iranian axis. Although the exposed shipment arrived by plane, there is no indication that the entire supply chain relies on the targeted Iranian airlines, and Tehran has already demonstrated that it examines and operates alternatives at sea and on land.
Although the American move significantly increases costs, lengthens transportation times, and makes the use of international airports difficult, it does not completely sever the connection. Now, with the pressure on Iranian aviation at its peak, the central question put to the test is whether the supply chain from China will be largely channeled to increased smuggling via maritime and overland routes.
