Apocalyptic claims from one of Putin's closest henchmen of a radioactive cloud heading across Europe have been ridiculed by experts.
The doomsday prediction was made by Nikolai Patrushev, who has alleged the deadly cloud was wafting west from Ukraine after Russian troops hit an arms depot containing depleted uranium ammunition supplied by the UK government.
Ex-KGB Patrushev is secretary of Russia's security council and reportedly one of warlord Putin's closest security aides and maintained flames erupted high into the sky in a fiery mushroom cloud after the hit.