Russia’s new cruise missile is built with parts sourced from the West, according to a Ukrainian intelligence assessment published on Monday.
The new Ukrainian assessment highlights the challenges of sanctions enforcement and the continued difficulties that the West faces in preventing critical components from ending up in Russian weaponry.
Ukraine’s military intelligence agency, known as the GUR, revealed that the S-71K “Kovyor” cruise missile contains electronic components sourced heavily from overseas, from the US, Germany, Ireland, Switzerland, Japan, Taiwan, and China. Throughout the war, Beijing has been a major supplier for the Russian defense industrial base.
Ukraine has frequently identified foreign components, including parts sourced from some of Kyiv’s closest European partners, inside Russian weapons, and has repeatedly urged the international community to further isolate Moscow.
However, despite widespread global sanctions, Western technology still finds its way into the products of Russia’s defense industry through civilian markets, states that sidestep export rules, or middlemen. Closing those gaps remains a significant challenge for the West and Ukraine.
“Maintaining access to foreign technologies and components allows the aggressor state to develop new means of destruction and scale their application in the war against Ukraine,” the GUR said Monday.
Neither Russia’s defense ministry nor its US embassy responded to a request for comment on the Ukrainian intelligence assessment.
The S-71 is an air-launched cruise missile that was developed by the United Aircraft Corporation, a key Russian aerospace and defense conglomerate that has produced fighter jets such as the MiG-35 and the stealthy Su-57. Little is known about the weapon, including domestic production rates, but it appears to be new.
The missile contains an inertial navigation system, a turbojet engine, and a fragmentation-explosive warhead that weighs 250 kg (roughly 550 pounds). The weapon was first used in an attack against Ukraine in late 2025 and has an estimated range of 300 km (186 miles), the GUR said in its assessment of the missile, without going into detail on the aftermath effects.
The GUR said Russia is also considering putting the S-71 missile on its S-70 Okhotnik-B (Hunter), a relatively new heavy combat drone that made its debut earlier in the full-scale invasion of Ukraine. Moscow is believed to possess a limited number of these aircraft.
The GUR assessment of the S-71 comes as Russia has stepped up offensive operations along the front line while taking heavy casualties in the process. Oleksandr Syrskyi, the head of Ukraine’s military, said in a Monday statement on the Telegram messaging app that Moscow is now “sustaining losses that exceed its capacity to replenish its units.”
Meanwhile, Syrskyi said that Ukrainian strikes on Russian production facilities are degrading its air defenses, which are already under serious strain.
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