BOSTON : A cryptocurrency financial services firm agreed on Tuesday to plead guilty to U.S. charges that it offered to help manipulate the market for a digital token created at the FBI's behest to help uncover fraud in the crypto sector. United Arab Emirates-registered CLS Global was one of the three companies and 15 individuals charged last year by federal prosecutors in Boston following a novel crypto-focused undercover investigation. The probe, dubbed "Operation Token Mirrors," marked the