Oil production cuts, plumes of smoke, altered plans for President Vladimir Putin: Ukraine’s strikes on oil facilities, military installations, and air defense systems are taking a toll on Moscow’s capacity to fight its war against Ukraine.

“We are now seeing the moment when the capabilities of Russia’s air defense are much smaller than the growth in production of Ukrainian drones,” Oleksandr Karpyuk, a soldier with the 59th Assault Brigade of Ukraine’s Unmanned Systems Forces who goes by the call sign Serge Marco, told RFE/RL.