Russia uses export-version S-400 missiles to strike Ukraine

Russia has used export-version surface-to-air missiles intended for foreign customers to strike ground targets in Ukraine, according to an investigation published Friday by Defense Express.

Fragments recovered after recent strikes show that Russia fired 48N6E2 missiles, an export variant of the long-range interceptor used by the S-300PMU2 Favorit and S-400 air defense systems. As reported by Defense Express, serial plates and identification markings found on the debris confirm that the missiles were produced for export, not for domestic Russian service.

According to sources cited by Defense Express, this is the first recorded case in which export versions of these missiles have been used in combat by Russia. The finding suggests that Moscow is drawing on stocks originally intended for foreign contracts as its own missile reserves continue to decline under the pressure of sustained strikes on Ukraine.

The 48N6E2 is normally designed as a long-range air defense interceptor, intended to engage aircraft and ballistic targets rather than ground objectives. In the recent attacks, however, the missile was used in a surface-to-surface role, striking a general area rather than a specific target. Defense Express reported that the missile likely lost guidance at an altitude of several kilometers, resulting in an unguided impact on the ground.

Technical documentation for the S-400 system often lists both domestic and export missile variants together, including 48N6E, 48N6E2, 48N6E3, 9M96E, 9M96E2, and 40N6E, alongside domestic versions such as 48N6DM and 40N6. Russian official sources typically simplify these designations or combine them, sometimes marking them as export models and sometimes using dual indexes such as 48N6E3/48N6DM. Despite these naming differences, the core performance parameters of the missiles are largely the same.

What makes the latest finding notable is the confirmed presence of the export marking “E” on the missile fragments. According to Defense Express, this designation leaves little doubt that the missile was originally manufactured for delivery abroad rather than for Russian Armed Forces use.

Export versions of the S-300PMU2 Favorit have previously been supplied to Azerbaijan, Algeria, Iran, China, and Syria. Export S-400 systems have been delivered to Algeria, Belarus, India, China, and Turkey. At present, however, only one active export contract remains unfulfilled: India’s 2018 agreement with Russia for five regimental sets of S-400 systems, valued at $5.43 billion.

Under that contract, deliveries were to be completed by 2023, but India has so far received only three regimental sets. Despite the delays, Indian officials have previously indicated interest in additional purchases. India is also the only current foreign operator of Russian long-range air defense systems that has a clear operational need for missile replenishment following high-intensity use.

After Operation Sindoor in the spring of 2025, which involved large-scale clashes with Pakistan, India reportedly expended a portion of its air defense missile inventory and would logically require new stocks to restore readiness. This has led Defense Express to assess that the missiles now used against Ukraine were most likely produced for the Indian contract and diverted for Russian use.

The report notes that other potential destinations cannot be fully ruled out. Iran, for example, received four S-300PMU2 divisions under a 2007 contract, completed by 2016. However, the status of those systems remains uncertain following Israeli airstrikes in June 2025, when the Israeli Defense Forces conducted extensive attacks against Iranian air defense infrastructure.

Regardless of the original customer, the use of export missiles against Ukraine reflects a broader pattern. Russia has previously deployed export-configured weapons in combat, including T-90S tanks and Pantsir air defense systems built for foreign clients. The latest case indicates that export stockpiles are now being consumed not only for frontline needs but also for long-range strikes on Ukrainian territory.

Defense Express emphasized that the missile was not used in a precision role, but rather as a substitute for scarce ground-attack weapons. The missile reportedly struck an area target after losing control, highlighting the growing reliance on improvised solutions as Russia faces continued shortages of purpose-built cruise and ballistic missiles.

The use of export missiles also raises questions about Russia’s ability to meet existing arms contracts and maintain its reputation as a supplier. Foreign customers awaiting deliveries may now face further delays as Moscow prioritizes its own operational needs over contractual obligations.