Russia’s army is forming a unit of some 3,000 North Koreans, a Ukrainian military intelligence source has told the BBC, in the latest report suggesting that Pyongyang is forming a close military alliance with the Kremlin.

United States Deputy Secretary of State Kurt Campbell attends a trilateral meeting with South Korea's First Vice Foreign Minister Kim Hong-kyun, unseen, and Japan's Vice Foreign M

Ukrainian President Volodymyr Zelenskyy said he had been briefed by Ukrainian intelligence services about what he described as North Korea's "effective involvement" in Russia's war in his country.