The news was sensational. It travelled quickly among Ukrainian soldiers fighting in Russia’s Kursk region. “I heard from a friend of a friend,” one officer, Vitalii Ovcharenko, recalled. “This was half an hour after it happened. My friend said: ‘We’ve got a North Korean prisoner! He’s in shock but OK.’ I said: ‘Wow.’” Ovcharenko added: “Everyone wanted a selfie. They wrapped him in a blanket and gave him tea.” Last week’s capture of two North Korean servicemen was an extraordinary moment in Russia’s bloody war against Ukraine. The Kremlin has taken elaborate steps to conceal the presence of 12,000 elite troops