An ancient country in western asia, by the twentieth century divided among the former ussr, turkey, and iran. It was attacked at various times from before the 7th century b.c. To 69 b.c. By assyrians, medes, persians, the greeks under alexander, and the romans. It changed hands frequently in wars between neo-persian and roman empires from the 3d to 7th centuries and later under arabs, seljuks, byzantines, and mongols. In the 19th century armenian nationalism arose but suffered during russo-turkish hostilities. It became part of the soviet republic in 1921, with part remaining under turkey.