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Ukraine Invasion Day 1,138: UKR drone strikes against the Promsintez enterprise in Chapayevsk [1]

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Date: 2025-04-05

Russian forces conducted a series of drone strikes against Ukraine on the night of April 4 to 5.

The Ukrainian Air Force reported that Russian forces launched 92 Shahed and decoy drones from the directions of Bryansk City; Millerovo, Rostov Oblast; Primorsko-Aktarsk, Krasnodar Krai; and occupied Cape Chauda, Crimea.[61] The Ukrainian Air Force reported that Ukrainian forces shot down 51 drones over northern, southern, eastern, and central Ukraine and that 31 decoy drones were "lost," likely due to Ukrainian electronic warfare (EW) interference. The Ukrainian Air Force reported that Russian forces struck Sumy, Dnipropetrovsk, Kyiv, and Zhytomyr oblasts. The Russian MoD attempted to deflect blame for the April 4 Russian missile strike against a residential area in Dnipropetrovsk Oblast that killed civilians, including children. The Russian MoD claimed that Russian forces conducted a high-precision missile strike against a restaurant in central Kryvyi Rih, Dnipropetrovsk Oblast where Ukrainian commanders were meeting on the evening of April 4.[62] Ukrainian President Volodymyr Zelensky reported that the April 4 Russian missile strike damaged a residential building and a playground, among other civilian infrastructure, and Ukrainian officials reported that the strike killed 18 people, including nine children.[63] Ukrainian Air Force reported that Ukrainian forces shot down 51 drones over northern, southern, eastern, and central Ukraine and that 31 decoy drones were "lost," likely due to Ukrainian electronic warfare (EW) interference. The Sumy Oblast Military Administration reported on April 4 that Russian forces launched 404 guided glide bombs against the oblast in the past week (roughly March 29 to April 4).[64] Kyiv City Military Administration Spokesperson Yevhen Ievlev reported on April 4 that Russian forces had targeted Kyiv City with 104 drones in the past week (roughly March 29 to April 4), that Ukrainian forces shot down 35 drones, and that the rest were "lost," likely due to Ukrainian EW interference.[65] understandingwar.org/...

Ukrainian forces reportedly struck the only plant in Russia that produces fiber optic cables that are vital for Russian forces' fiber optic drones. Ukrainian Center for Countering Disinformation Head Lieutenant Andriy Kovalenko stated on April 5 that unspecified drones hit the Fiber Optic Systems plant in Saransk, Republic of Mordovia.[8] Kovalenko stated that the plant produces materials for control, communication, and data transmission systems, including drone control in the Russian military. Geolocated footage published on April 5 shows an explosion and fire in Saransk.[9] The Fiber Optic Systems plant is the first and only plant manufacturing optical fiber in Russia.[10] A Russian insider source claimed that the plant produces all the Russian military's fiber optic cables.[11] The Russian Ministry of Defense (MoD) claimed that Russian forces shot down three drones over the Republic of Mordovia overnight, and the Republic of Mordovia Head Artyom Zdunov claimed that a drone struck an enterprise in the republic.[12] ISW cannot independently verify the damage to the Fiber Optic Systems plant, but successful Ukrainian strikes against the enterprise would likely reduce the Russian military's ability to supply troops with fiber optic cables to use with first-person view (FPV) drones on the battlefield. Ukrainian outlet Suspilne reported on April 5 that sources in Ukraine's Security Service (SBU) stated that the SBU conducted drone strikes against the Promsintez enterprise in Chapayevsk, Samara Oblast on the night of April 4 to 5, causing at least 20 explosions and several fires.[13] The sources reported that Promsintez produces industrial explosives, including ammonal, ammonite, and granulite, and that the plant stopped operations after the strike. The Russian MoD claimed that Russian forces destroyed six drones over Samara Oblast overnight, and Samara Oblast Governor Vyacheslav Fedorishchev claimed that Ukrainian forces conducted a drone strike against an industrial enterprise in Chapayevsk, causing a fire.[14] The Russian MoD claimed on April 5 that Ukrainian forces conducted 14 drone and artillery strikes against Russian energy infrastructure in Bryansk, Belgorod, Smolensk, Lipetsk, and Voronezh oblasts and in occupied Luhansk and Kherson oblasts on April 4 and 5.[16] The Ukrainian General Staff reported on April 5 that the Russian MoD's claims about Ukraine's alleged violations of the temporary energy infrastructure ceasefire are false and that Ukrainian forces are only striking legitimate military targets.[17] understandingwar.org/...

Key Takeaways: European and NATO officials emphasized that a strong Ukrainian military backed by European security guarantees remains the most effective deterrent against future Russian aggression to ensure long-term peace in Ukraine and Europe.

Ukraine's European partners continue preliminary technical discussions about a possible future peacekeeping contingent in Ukraine.

Ukrainian forces reportedly struck the only plant in Russia that produces fiber optic cables that are vital for Russian forces' fiber optic drones.

Ukraine's European partners continue to provide technical support to Ukraine.

Ukrainian forces recently advanced near Kupyansk, and Russian forces recently advanced near Toretsk and Pokrovsk and in Kursk Oblast.

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[1] Url: https://www.dailykos.com/stories/2025/4/5/2314861/-Ukraine-Invasion-Day-1-138-UKR-drone-strikes-against-the-Promsintez-enterprise-in-Chapayevsk?pm_campaign=front_page&pm_source=latest_community&pm_medium=web

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