Russia unleashed its second big attack on Ukraine's energy infrastructure this month on Thursday, cutting power to more than 1 million people in the west, south and centre of the country. President Vladimir Putin said Moscow had struck in response to Ukraine's strikes on Russian territory with U.

Russian attacks have not so far struck government buildings in the Ukrainian capital. Air defences heavily protect Kyiv, but Putin says Russia’s Oreshnik hypersonic missile, which it fired for the first time at a Ukrainian city last week, is incapable of being intercepted.

Putin said that the decision-making centres in Kyiv could fall target to Russia’s new Oreshnik missiles that have the capacity to travel “around three kilometres per second”