Ukraine's Defense Forces once again struck the russian company JSC VNIIR-Progress on the morning of June 10. The facility is located in Cheboksary, the capital of russia's Chuvash Republic, approximately 1,000 km from Ukraine.
Numerous photos and videos have already appeared online showing an FP-5 Flamingo cruise missile in flight, as well as the aftermath of the strike on the plant's main administrative building.
Read more: Ukrainian FP-5 Flamingo Missile Hits Plant of the Leading Explosives Manufacturer in russia (Video)
At present, it remains unclear how many cruise missiles participated in the attack. The strike caused a fire at the facility. russian authorities have so far disclosed few details and have not released their own figures regarding allegedly intercepted weapons. Chuvash Republic head Oleg Nikolayev reported that three people were injured.
The latest Flamingo strike against JSC VNIIR-Progress suggests that russia continues to face shortages of air-defense assets and remains unable to provide effective protection for all military-related facilities across its vast territory. At the same time, the scale of the attack remains unknown, making it difficult to assess the effectiveness of russian air defenses in this specific case.
Regardless, this marks the second cruise-missile attack on the facility in just over a month. VNIIR-Progress was previously targeted with FP-5 Flamingo missiles on May 5.
During that earlier attack, six missiles were reportedly launched and one reached its target. At the time, Defense Express examined whether such a penetration rate was typical for cruise-missile operations against layered air defenses.
It is also worth noting that cruise missiles were chosen for both strikes instead of long-range attack drones. That decision appears logical given the significantly larger warhead carried by a cruise missile, allowing it to inflict greater structural damage on hardened targets.
russian authorities, meanwhile, have taken measures to protect the facility from drone attacks. The building was extensively covered with anti-drone netting, while additional nets were suspended between specially erected towers across parts of the site, as previously noted by Astra.
The decision to install such protective measures appears to have followed earlier attacks conducted with long-range strike drones during the previous year.
JSC VNIIR-Progress remains a critically important enterprise for russia's defense industry. The company manufactures various electronic systems and, most importantly, produces jam-resistant Kometa satellite-navigation antennas used on Shahed-type drones, guided aerial bombs, Iskander missiles, and other precision-strike weapons.
Defense Express previously reported that the May attack on VNIIR-Progress indirectly revealed the Ukrainian Armed Forces unit that had received FP-5 Flamingo cruise missiles for operational use.
Read more: Ukraine's FP-5 Flamingo Cruise Missile Presented as Heavy UAV System at SAHA Expo 2026
