Three people have been killed in cross-border attacks between Russia and Ukraine as both sides launched renewed strikes across frontline and border regions, according to local officials. The escalation included artillery fire, drone attacks, and strikes on infrastructure in multiple Russian and Ukrainian regions.

The General Staff of the Armed Forces of Ukraine officially confirmed on Tuesday that the Syzran oil refinery in Russia's Samara region has completely ceased operations following a precision strike by Ukrainian Defense Forces on May 21.

A deadly wave of overnight drone strikes has targeted the deep interior of Russia, sparking a massive fire at a major oil refinery and leaving multiple casualties on both sides of the border.

On the night of April 21, 2026, drones from the Security Service of Ukraine (SSU) launched a successful strike against the Samara line-production-dispatch station in Russia.

A drone attack has struck a major chemical enterprise in the Russian city of Tolyatti, in the Samara region, sending thick black smoke into the sky, according to reports and social media footage.

 Drones attacked temporarily occupied Mariupol and several Russian cities overnight, causing fires and ammunition detonations.

Overnight drone attacks deep inside Russian territory have become a defining feature of the evolving military landscape in the second half of the war, and the latest strikes on the Krasnodar Territory, Samara Region, and Chechnya underline a clear shift in both strategy and capability. What happened across Russia this week is not an isolated episode but part of a systematic campaign targeting energy, port, and urban infrastructure hundreds of kilometers from the front line — a trend now reshaping Moscow’s threat perceptions, air defense priorities, and internal political messaging.

Several regions across Russia, including the Krasnodar Territory, Samara Region, and Chechnya, came under drone attack overnight, according to local authorities, media reports, and independent monitoring groups.

Ukraine’s military claimed it carried out strikes on key Russian oil infrastructure in Bryansk and Samara Oblasts on September 23, 2025.

Ukrainian drones allegedly struck oil refineries overnight on Sept. 20 in Russia’s Saratov and Samara regions.