Because the Russian defence minister makes an unannounced go to to Pyongyang and Ukraine claims that North Korean troops are in Russia and able to assist Russia’s navy – our Evaluation Editor Ros Atkins, together with BBC Confirm, has been what we find out about North Korea’s alleged involvement within the conflict.
Produced by Catherine Karelli, Richard Irvine-Brown, Vitaly Shevchenko, Olga Robinson and Jake Kwon.