Yandex, the Russian tech giant often called "Russia's Google" for its search engine, taxi and food-delivery apps, said it is struggling to keep services running after Ukrainian drones hit two of its five data centres, in Sasovo (Ryazan region) and Kaluga, over two days. The company said Sasovo, which houses supercomputers used to develop its AI model, was seriously damaged and fully suspended, and it could not predict when full service would return; some AI chatbot and smart-home functions have been affected. President Volodymyr Zelensky said the strikes mirror Russian attacks on Ukrainian data centres, which recently caused internet outages for about 100,000 households around Kyiv, as both sides increasingly target infrastructure in the war.