(Reuters) – Ukraine’s SBU security service said on Saturday it had uncovered a corruption scheme in the purchase of arms by the country’s military totalling the equivalent of about $40 million. The announcement of mass procurement fraud, confirmed by Ukraine’s Defence Ministry, will have a huge resonance in a country beleaguered by Russia’s nearly two-year-old invasion. The fight to root out endemic corruption remains a major issue as Ukraine presses its bid to secure membership in the European Union. The SBU said an investigation had “exposed officials of the Ministry of Defence and managers …