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The krai is located within the historical region of Transbaikalia (Dauria) and has extensive international borders with China (Inner Mongolia) (998 km) and Mongolia (Dornod Province, Khentii Province and Selenge Province) (868 km); its internal borders are with Irkutsk and Amur Oblasts, as well as with the Buryatia and the Sakha Republic. The Khentei-Daur Highlands are located at the southwestern end.