. "Coup d'\u00E9tat" . . "coup" . "1921 coup d'\u00E9tat" . "military operation supported by the British" . "several policemen killed or injured in Tehran during the coup" . . . . . . . . "1921" . . "* dissolution of theRepublic of Gilan" . . . . "1925" . . "deposed" . "Persia" . "* continuingconflictwithSimko Shikakuntil 1922" . "1921 Persian coup d'\u00E9tat" . . . . "* power takeover bySayyed Ziaoddin Tabatabaee" . . . "was overthrown" . . . . . "* deterioration of Persian control overSheikh Khazal's Emirate of Mohammerah until 1925" . "Supported by:" . . . "coup in Persia" . . . "* suppression ofColonel Pessian's revolt and dissolution of theAutonomous Government of Khorasan" . "coup d'\u00E9tat in Iran" . . "February 21, 1921" . "coup d'\u00E9tat of 1921" . . . "Persian Cossack Brigadevictory" . "1921 Persian coup d'etat" . "the 1921 coup in Iran" . . "coup d'\u00E9tat in 1921" . "Government of Persia" . . . "Soviet Union" . "seized the capital" . "1921 coup" . "United Kingdom" . . "1921 Persian coup d'\u00E9tat" . "successful coup" . . . "coup d'\u00E9tat" . "1921-02-21" . "Persian Cossack Brigade" . "Overthrow of the Qajar dynasty" . "coup in Tehran" . "1,500 Persian Cossacks" .