Kyiv is heavily protected by air defences, but Putin says the Oreshnik, which Russia fired for the first time at a Ukrainian city last week, is incapable of being intercepted - a claim greeted with scepticism by Western experts.

President Vladimir Putin warned that his forces could strike “decision-making centers” in the Ukrainian capital of Kyiv with new ballistic missiles as retaliation for attacks on Russia using Western missiles.

Russia is selecting targets in Ukraine that could include "decision-making centres" in Kyiv in response to Ukrainian long-range strikes on Russian territory with Western weapons, President Vladimir Putin said on Thursday.

Russian President Vladimir Putin has threatened to strike Ukraine again with a new nuclear-capable ballistic missile following Moscow’s latest widespread attack on critical energy infrastructure.