LONDON (Reuters) – The leader of the Russian-backed separatist Donetsk region of Ukraine said on Sunday there was no reason to pardon two British nationals who were sentenced to death last week after being captured while fighting for Ukraine. A court in the self-proclaimed Donetsk People’s Republic on Thursday found Aiden Aslin and Shaun Pinner – and Moroccan Brahim Saadoun – guilty of “mercenary activities” seeking to overthrow the republic. Britain says Aslin and Pinner were regular soldiers and should be exempt under the Geneva Conventions from prosecution for participation in hostilities. …