Moscow Mayor Sergei Sobyanin said on Monday that air defence systems destroyed almost 60 drones headed toward the Russian capital. Emergency services were dispatched to locations where debris fell, though officials provided no immediate details on casualties or damage.

The attacks prompted temporary flight suspensions at Moscow’s Sheremetyevo, Domodedovo, Vnukovo and Zhukovskiy airports before operations later resumed, according to Russia’s aviation authorities.

Russia’s Defence Ministry said a total of 301 drones were intercepted overnight, including over Russian-controlled territories in occupied areas of Ukraine. The latest wave of attacks followed renewed Ukrainian strikes last week on Moscow’s only oil refinery, one of the most significant assaults on the Russian capital since the full-scale war began in 2022.

In Ukraine, regional authorities reported civilian casualties in several areas following Russian attacks.

In the northeastern Sumy region, prosecutors said a drone strike killed three members of the same family — a 13-year-old boy, his 36-year-old father and his 73-year-old grandmother. The boy’s mother and two siblings were injured.

Further south, a drone attack on the southeastern city of Zaporizhzhia killed one woman and wounded three others, regional governor Ivan Fedorov said.

In the Odesa region, Governor Oleh Kiper said a Russian Iskander ballistic missile struck an agricultural facility on Sunday evening, killing one person and injuring three others. The attack sparked fires involving vehicles and fuel storage tanks.

Security concerns also intensified in Crimea, the Black Sea peninsula annexed by Russia in 2014. Sevastopol authorities cancelled all outdoor public events on Monday and ordered street lighting to remain switched off as a precautionary measure.

Governor Mikhail Razvozhayev urged residents to reduce electricity consumption amid growing pressure on regional energy supplies. Authorities have also restricted fuel sales to government agencies and essential services after repeated Ukrainian strikes on logistics routes and energy infrastructure contributed to shortages.

Ukraine’s navy said Russian drones also targeted commercial shipping in the Black Sea overnight, damaging three merchant vessels.

One of the vessels, the Panamanian-flagged dry cargo ship Victress, operated by Turkey-based Rana Denizcilik according to shipping data, sustained significant damage after being struck by a drone. Ukrainian Deputy Prime Minister Oleksiy Kuleba said a 58-year-old Egyptian crew member was killed and eight others, including Turkish and Indian nationals, evacuated the vessel aboard a lifeboat.

Kuleba said two additional merchant vessels sailing under the flags of Palau and Belize were also attacked but continued their voyages without reported casualties.

The incidents underscore the continued risks facing commercial shipping in the Black Sea, where attacks on ports, vessels and export routes have become a recurring feature of the conflict and have disrupted regional trade since the war began.

The latest exchanges highlight the growing use of long-range drones by both sides as the conflict increasingly extends beyond front-line battlefields and into major urban centers, critical infrastructure networks and international maritime corridors.

Ukrainian President Volodymyr Zelensky used the anniversary to accuse Moscow of endangering global nuclear safety, saying repeated Russian drone operations near the Chernobyl nuclear power plant risked triggering another man-made catastrophe.

“Russia is once again bringing the world to the brink of a man-made disaster,” Zelensky wrote on social media, referring to Iranian-designed Shahed drones used extensively by Russian forces since the full-scale invasion began in February 2022.

He said such drones had repeatedly flown over the plant and that one had struck the protective confinement structure last year, calling for stronger international pressure to halt what he described as “nuclear terrorism.”Russian missile and drone strikes on the southeastern Ukrainian city of Dnipro killed at least nine people, regional officials said, making it the deadliest single attack reported during the latest wave of cross-border strikes.

In Russian-occupied Crimea, Moscow-installed authorities said one man was killed in a Ukrainian drone strike on the port city of Sevastopol. Russia annexed Crimea from Ukraine in 2014, a move widely rejected by the international community, and has since used the peninsula as a key military logistics hub.

In eastern Ukraine’s occupied Luhansk region, Leonid Pasechnik, the Russia-backed governor, said three people were killed in an overnight Ukrainian drone strike on a village, after earlier reporting two deaths on Saturday.Earlier, authorities in Russia’s Belgorod border region said a woman was killed in a Ukrainian drone attack.

Ukraine did not publicly comment on the strikes in Crimea or Luhansk, and the claims could not be independently verified.Ukraine’s military said it had also struck an oil refinery in Yaroslavl, deep inside Russian territory, triggering fires at a facility that processes around 15 million tons of oil annually and produces gasoline, diesel and jet fuel, including supplies for the Russian military.Russia did not immediately comment on the refinery attack.

Kyiv has increasingly used domestically developed long-range drones capable of reaching targets up to 1,500 km (900 miles) inside Russia, targeting energy infrastructure and military logistics sites.Ukrainian officials argue such strikes are aimed at reducing Russian military capacity, particularly as Moscow seeks to increase oil exports after the Trump administration granted temporary sanctions waivers to ease global supply constraints.

The anniversary of the 1986 Chernobyl disaster also renewed focus on the safety of the damaged reactor site.Rafael Grossi, director general of the International Atomic Energy Agency, said repairs to the plant’s outer protective shell must begin urgently after damage from a strike last year compromised a key safety function of the structure.

He warned that prolonged delays could increase risks to the original sarcophagus covering Reactor No. 4, the site of the world’s worst nuclear disaster.The European Bank for Reconstruction and Development estimated repairs would require at least 500 million euros ($586 million).

Ukraine’s Energy Minister Denys Shmyhal said international partners had so far committed 100 million euros in additional funding, on top of a previously agreed 30 million euros.Ukrainian officials say a Russian drone struck the outer shell of the New Safe Confinement structure in February 2025.

The $2.1 billion steel arch, completed in 2019, was built to contain radioactive material over the destroyed reactor.Moscow denied responsibility and accused Kyiv of staging the incident.Separately, Russia’s Defense Minister Andrei Belousov visited North Korea on Sunday for talks with leader Kim Jong Un, where both sides discussed expanding military cooperation.

Belousov said the two countries had agreed to move military ties to a “sustainable, long-term basis,” according to Russian state news agency RIA Novosti.During the visit, he awarded Russia’s Order of Courage to North Korean troops who served in Russia’s Kursk region, where Ukrainian forces launched a surprise incursion in August 2024.

Kim has supplied thousands of troops and significant weapons shipments to support Russia’s war effort.