afghanistan aimag altay people badghis province bayid bonan buryats china columbia university dari darkhad daur dongxiang people dukha ehsan yarshater farah province faryab province ferozkhoi ghor province greater mongolia hazara people hazarajat herat herat province iran jowzjan province kalmyk people khalkha kharchin khorasan province khorchin khoshut khotgoid mongolia mongolian language mongols naimans nomad oirats ordos pakistan persian language russia sar-e pol province sunni islam tajiks torghut tribe tuvans urad mongols yugur zakhchin