A 2024 photo of Russian President Vladimir Putin accompanied by the head of the Chechen Republic, Ramzan Kadyrov (second from left) inspects Nato military trophies captured in battles in Ukraine.Vyacheslav Prokofyev / AP Roger Boyes is diplomatic editor the Times of London. OPINION: Boris Nemtsov, an anti-corruption campaigner and a former Russian deputy prime minister, was crossing the bridge over the Moskva river in the winter of 2015 when he was shot down and killed.