Ros Atkins On… Igor Kirillov’s death

Ukrainian sources have told the BBC that the country’s security service was behind the killing of a high-ranking general in the Russian armed forces and his assistant.

The BBC’s Analysis Editor Ros Atkins, along with BBC Verify, takes a look at material from the scene to assess what we know – and what we don’t.

Produced by Catherine Karelli, Richard Irvine Brown, Olga Robinson and Mark Lyons