MOSCOW: US citizen Joseph Tater, who was detained in Moscow last August and later sent for compulsory psychiatric treatment, has left Russia, the state news agency TASS said on Friday. Tater, who according to a Kremlin source last month was one of nine Americans being held in Russia that Washington wanted returned in a prisoner exchange, was sentenced to 15 days in jail last August for “petty hooliganism” after being accused of abusing staff at a Moscow hotel, something he denied.