By Dan Peleschuk KYIV, June 8 (Reuters) – The former head of Ukraine’s Supreme Court will serve five years in prison under a plea deal in a high-profile bribery case, anti-corruption prosecutors said on Monday. Vsevolod Kniaziev was accused of accepting a $2.7 million bribe in 2023 in exchange for a court ruling — a case seen as a key test of Kyiv’s wartime anti-corruption drive, closely watched by foreign partners.