The International Atomic Energy Agency confirmed that a drone struck the cooling tower of an operating reactor at Russia's Kursk nuclear power plant early Thursday, with IAEA Director General Rafael Grossi calling any attack on a nuclear installation unacceptable and urging maximum military restraint to prevent the risk of a nuclear accident [2][10][23]. Russia's state nuclear corporation Rosatom said the unit continued operating at full power with radiation levels unchanged and within natural norms [36]. The confirmed strike came as Russia opened its first State Duma elections since the 2022 invasion under a mass Ukrainian drone barrage, with Moscow Mayor Sergei Sobyanin reporting that more than 350 drones flew toward the capital overnight and 64 were destroyed on approach to the city [8][12][19]. Russia's Defense Ministry said it intercepted 629 drones across Russia and annexed Crimea overnight [8][19].
Ukrainian President Volodymyr Zelenskyy said Ukrainian forces struck the Slavneft-Yanos refinery in Yaroslavl — one of Russia's largest, with a 300,000 barrel-per-day capacity — and damaged three transport aircraft and three helicopters at a military airfield in Rostov region [15]. Zelenskyy also warned that safe moments in Russia's skies had ended, urging ambassadors of states operating flights to Russia to heed the warning [16]. Ukrainian military spokesperson Oleksandr Borodin said Russia's elite Rubicon drone unit withdrew from northern Donetsk Oblast after heavy losses during Ukraine's Operation Vivaldi, and that most specialized Russian drone units in the area suffered significant losses in personnel and equipment [7]. Ukraine's General Staff separately reported strikes on a Russian Orion drone ground control station at Saki airfield in occupied Crimea and on drone launch sites and ammunition depots in occupied Donetsk and Luhansk regions [18].
Russian officials framed the Ukrainian barrages as attempts to disrupt a sovereign election and as Western-backed terrorism. Russian Foreign Ministry spokeswoman Maria Zakharova said Ukraine was launching drone strikes to undermine "democratic elections" [24]. Russia's Foreign Ministry summoned Britain's chargée d'affaires to protest London's deliveries of drones and weapons to Ukraine, calling London an accomplice to "terrorism and war crimes" and warning that any British military facility in Ukraine used to launch attacks on Russian territory is a legitimate target [2][13]. Kremlin Ambassador-at-large Rodion Miroshnik said Ukraine was "reaping the inevitable consequences" after turning its ports and logistics centers into military targets [1]. President Vladimir Putin called on voters to contribute to the country's victory in the war through their ballot [29][32].
Officials and residents described Russian strikes on Ukrainian cities as systematic terror against civilians. Russia launched 93 drones overnight against Konotop, Zaporizhzhia, and Kyiv, damaging a kindergarten, school, medical facilities, and gas and power infrastructure [6]. In Odesa, a Russian Shahed drone struck between the 15th and 16th floors of a 20-storey residential building, injuring three people including a four-year-old child [17]. Resident Valeria said she had always considered the building one of the safest in the city, and that «nous ne savons plus où aller pour être en sécurité» (we no longer know where to go to be safe) [17]. Metinvest Chief Operating Officer Oleksandr Myronenko said the fourth Russian ballistic missile attack on the Zaporizhstal steel plant in a month amounted to "systemic terror against Ukrainian industry and people" [20]. Zelenskyy said Russia launched approximately 2,100 drones and 78 missiles at Ukraine in one week [1].
The Duma vote drew criticism from European institutions and Russian opposition voices. European Commission spokesman Christian Wigand said the elections were held under "institutionalised repression" and underscored the erosion of democracy in Russia [2][10]. OSCE Parliamentary Assembly President Pere Joan Pons said Russia's refusal to invite an election observation mission was "a serious breach of the commitments it has undertaken as an OSCE participating State," while ODIHR Director Maria Telalian called the decision deeply regrettable [25]. The anti-war Yabloko party was barred from the ballot by Russia's Supreme Court in August [5], and Yabloko candidate Grigory Grishin said «خواست پایان دادن به خونریزی در این درگیری با اوکراین از حمایت گستردهای برخوردار است» (the desire to end the bloodshed in the conflict with Ukraine enjoys broad support) [33]. A Levada Center poll found that 59% of Russians favor ending the fighting and starting peace negotiations [5][19]. Ukrainian civil society organizations argued in a joint statement that Russia's aggression is what makes democratic elections in Ukraine impossible [27], and the Ukrainian Foreign Ministry called voting organized in occupied Ukrainian territories illegal and invalid [32].
A Multilateral Sanctions Monitoring Team report found that up to 25,000 North Korean citizens assemble drones at Russian plants, including roughly 12,000 at the Alabuga special economic zone, earning about $7,500 a year [9][28]. The report said Russia issues student visas — more than 35,000 in 2025 — to bypass the UN ban on North Korean labor, and that Pyongyang confiscates 80–90% of their wages, generating $800 million in 2025 for its banned nuclear and missile programs [9][28]. Ukrainian intelligence deputy chief Vadim Skibitsky said North Korea has sent 8,500 fighters to Russia, including 400 drone operators [9], and intelligence representative Andriy Chernyak said Moscow plans to base North Korean troops in the Voronezh region with up to 120 ballistic missiles and six launchers [9].
Polish Prime Minister Donald Tusk warned that intelligence shows Russian plans for provocations "far more dangerous than those we have faced so far" against countries supporting Ukraine, and called for NATO unity [3]. Ukrainian Foreign Minister Andriy Sybiha called Russian drone strikes "Putin's terror knocking directly on the doors of the EU and NATO" [1]. French President Emmanuel Macron announced he had asked the government to prepare a plan to protect France's critical infrastructure against Russian hybrid attacks [10], and Danish Defence Minister Jeppe Bruus said Denmark would accelerate support for Ukraine after a Russian warship fired flares at a Danish helicopter [2].
The U.S. House of Representatives passed a sanctions package targeting Russian officials, banks, and the shadow tanker fleet, with tariff authority of up to 100% on countries purchasing Russian oil and gas [20][26]. Speaker Mike Johnson said "for too long, Putin has bankrolled this devastating war with money and resources from countries willing to look the other way" [26]. Democratic opponents split on the tariff provisions: Representative Gregory Meeks warned that "this president has always said he loves tariffs" and opposed ceding tariff authority, while House Minority Leader Hakeem Jeffries said the bill does not provide a path to secure Ukraine's victory [26]. Senator Richard Blumenthal said the bill increases pressure on Moscow and told Ukraine it is not alone [26].
Drone-industry analysts and satellite imagery documented Russia's expanding drone infrastructure and new jet-powered variants. Satellite images from the U.S. company Vantor revealed a launch site in Orel oblast with at least 23 launch ramps pointing toward the Ukrainian border, and the first silhouettes of Geran-5 drones, described as a roughly 1,000-km-range weapon flying near 480 km/h [21]. Ukrainian Air Force data showed Russia used about 2,800 jet-powered attack drones in August, nearly double the July figure, with jet-powered interception rates at just over 60% compared with over 90% for propeller models [4]. DroneSec General Manager Darren DelSignore said Seeker variants became more effective with the spread of the jet-powered Geran family [4].
Reported diplomatic accounts held that a U.S.-Russia agreement is largely prepared and that Ukraine's refusal to surrender the remainder of Donetsk is the main obstacle, according to U.S. envoy Jared Kushner's remarks to the Yalta European Strategy conference [1]. Russian Foreign Minister Sergey Lavrov said Russia has "no grand illusions" about peace talks and will only negotiate on its terms [1]. U.S. President Donald Trump announced that Moscow and Kyiv had allegedly agreed to pause strikes on oil refineries and blamed surging U.S. diesel prices on Ukrainian strikes against Russian fuel production [15].
Russian flight cancellations doubled after Zelenskyy's September 1 warning, rising from 2.1% in August to 3.5% in the first two weeks of September, with Sochi worst hit at 7% of departures [16]. Sochi polling stations were temporarily closed and voters evacuated to shelters during a drone alert on the first day of voting [5][8]. Central Election Commission chair Ella Pamfilova acknowledged "small incidents" including a Krasnodar polling station relocated after drone damage broke its windows [8].
Voting in the three-day Duma election continues through September 20, with United Russia seeking to retain its constitutional majority among 111 million voters across 89 regions [5][19]. The IAEA's call for maximum restraint around nuclear facilities remains in effect as both sides continue drone and missile exchanges [2][10].