Ukraine struck multiple critical Russian targets overnight on 20–21 August, hitting a refinery in Rostov Oblast, a railway power substation in Voronezh Oblast, and a GRU base in occupied Crimea. Satellite data confirmed large fires at several sites, while occupation officials attempted to downplay the incidents.
These coordinated strikes mark the latest wave in Ukraine’s ongoing campaign to degrade Russia’s ability to wage war by targeting infrastructure deep inside Russian territory. Lately, the strikes have been focused on Russia’s
oil refineries and
southern railways. The Russian army is heavily dependent on railway transportation.
Ukrainian drones hit refinery and bypass air defense in Rostov Oblast
Ukrainian Telegram channel Exilenova+ reported that drones struck the Novoshakhtinsk oil refinery in Rostov Oblast. According to the outlet, the facility was protected by two Pantsir and one Tor anti-air systems, which failed to prevent the attack. Local residents reported hearing around five explosions over the city. Russian news Telegram channel Astra confirmed that a fire broke out at the site following the drone strike.
GRU base and helicopter airfield in Sevastopol targeted
In Russian-occupied Crimea, Ukrainian drones struck the Russian Black Sea Fleet’s military unit #95408 in Sevastopol. Exilenova+ stated that GRU military intelligence forces are currently based there. NASA FIRMS satellite data confirmed fires at the site. Fires were also observed at the nearby Khersones airbase, which hosts Russian helicopters and drones.
Russian-installed occupation authorities claimed the explosions were part of unannounced firefighting drills conducted by the Black Sea Fleet in coordination with emergency services. Astra quoted occupation head Mikhail Razvozhayev, who urged residents to “trust only official information.” However, local social media users mocked the explanation, saying they were being treated “like fools.”
Ukrainian drones disable power substation in Voronezh Oblast
Further north, Ukraine also hit the Zhuravka railway power substation in Voronezh Oblast. Exilenova+ reported this strike, and NASA satellite data confirmed a fire at the location. Astra relayed a statement from the Russian governor, who said that more than five drones were downed over the southern districts of the oblast. He acknowledged that an energy facility had been damaged, leaving several villages without electricity and causing a number of passenger train delays.
Astra later reported that train service was restored after the incident, but highlighted that 19 trains were initially delayed due to the attack. Authorities warned that the threat of further drone strikes remained across the entire oblast.
Russia claims mass drone shoot-downs amid visible damage
Russia’s Ministry of Defense claimed that its air defenses had shot down 49 Ukrainian drones overnight. The ministry alleged that 21 drones were intercepted over Rostov Oblast, 7 over Voronezh Oblast, 4 over occupied Crimea, and the rest across other regions including Belgorod, Bryansk, Kaluga, Orel, Kursk, and Tula oblasts, as well as over the Black Sea.
Moscow adds nuclear spin as narrative deflection
Amid the fallout, Russian authorities claimed that unit #7 at the Novovoronezh Nuclear Power Plant in Voronezh Oblast had been temporarily disconnected from the grid. TASS cited the Rosenergoatom press service, which denied any safety risks.
The claim came shortly after the regional governor’s vague reference to drone strikes on an “energy facility,” suggesting a possible attempt to introduce a nuclear angle to the story.
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