"closed military zone" . "Russian border security zone" . . "zone of the border control" . "Border Security Zone" . "border security zone" . "Forbidden Border Zone" . . "Border Security Zone of Russia" . "restricted security zones" . "Border Security Zone of Russia" . "sizable border zones" . "border control zone" . . "border zone of the USSR" . . "border zone" . . "border zone of a special regime" . . "certain areas" .