Aiden Aslin, a marine in Ukrainian army, sentenced with UK citizen Shaun Pinner by proxy court in Donetsk
A British citizen who has been sentenced to death by a Russian proxy court in eastern Ukraine has launched an appeal against the verdict.
Aiden Aslin, 28, a British-Ukrainian former care worker from Nottinghamshire who was a Ukrainian marine, was captured by Russian forces in the besieged city of Mariupol in April.