Turkish banks have started closing Russian corporate accounts following threats of secondary sanctions from the United States, the Vedomosti business dailyreported Thursday, citing financial consultants and business owners. U.S. President Joe Bidensigned an executive order in December announcing secondary sanctions on foreign banks suspected of supporting Russia’s war against Ukraine. These warnings prompted Turkish banks to suspend processing payments and terminate relationships with nearly all Russian counterparts, mediareported last month, and the move was said to have led to longer process…