 Complete the following phrase:  The Afghan Turkmen population in the 1990s was estimated at around 200,000. The original Turkmen groups came from east of the Caspian Sea into northwestern Afghanistan at various periods, particularly after the end of the 19th century when the Russians moved into their territory. They established settlements from Balkh Province to Herat Province, where they are now concentrated; smaller groups settled in Kunduz Province. Others came in considerable numbers as a result of the failure of the 