But, increasingly, Moscow is deploying its new jet-powered drones, for which Ukraine also has limited answers. The drones now attack around the clock, targeting major businesses, data centres, railway infrastructure, medical facilities and densely populated residential neighbourhoods.

Ukraine struck Yandex data centers in Sasovo, Ryazan region, and the Kaluga region.

Ukraine struck and partly disabled a major data center operated by Russian technology company Yandex on Friday, a day after it hit a similar facility, widening the scope of its attacks against Russia after Moscow targeted data hubs inside Ukraine.

Moscow says its capture of the region is inevitable. But Kyiv has so far stymied Russian efforts to encircle Ukrainian “fortress belt” cities.

Ukraine’s counter-offensive on the Lyman axis collapsed the northern arm of a Russian pincer movement aimed at surrounding Ukrainian-held Donetsk, liberating up to 176 square kilometres and forcing Russian units onto the defensive,

Russia is fighting for settlements it once firmly held in Donetsk, and has retreated from many others.

In response to mounting losses and little progress on the battlefield, Russia plans to unleash a growing barrage of jet-powered drones and ballistic missiles at Ukraine’s cities. Ukraine lacks the means to shoot them down.

Ukraine's military launched an attack on Russia's Tver Oblast overnight on Oct. 9, reportedly targeting a Russian factory that manufactures fuel components for Kh-55 and Kh-101 cruise missiles,