By David Henry and Niket Nishant (Reuters) -Citigroup Inc’s total exposure to Russia amounts to nearly $10 billion, the bank said on Monday, higher than previously communicated, following questions over whether it will have to set aside funds to cover potential losses. Citigroup listed Russia as 21 among its top 25 country exposures with $5.4 billion of loans, securities and funding commitments at the end of December, compared with $5.5 billion at the end of September. That represents 0.3% of the bank’s exposures in 2021, according to a regulatory filing. Citigroup also gave details of further…