Transcaspian Oblast (Russian: Закаспийская область, Zakaspiyskaya oblast), or Transcaspia, was the section of Russian Empire and early Soviet Russia to the east of the Caspian Sea during the second half of the 19th century until 1924. It was bounded to the south by Iran's Khorasan Province and Afghanistan, to the north by the former Russian province of Uralsk, and to the northeast by the former Russian protectorates of Khiva and Bukhara. Area, 212,545 sq. miles. Part of Russian Turkestan, Transcaspian Oblast corresponds roughly to the territory of present-day Turkmenistan and southwestern of Kazakhstan.