
The allegation comes a day after Ukrainian President Volodymyr Zelensky said he believed 10.000 North Korean soldiers could join the war based on intelligence information. South Korean President Yoon Suk Yeol called for a security meeting on Friday and said the international community must respond with "all available means".
According to the spy agency, 1.500 troops have already arrived in Russia - with anonymous sources telling South Korean media the final figure could be closer to 12.000, and BBC News is speaking about the subject.