Various ethnic and religious factions tried to gain political accomplishments during this period , often resulting in violent revolts and a brutal suppression by the Iraqi military , led by Bakr Sidqi . In 1933 , thousands of Assyrians were killed in Simele massacre , in 1935 – 1936 a series of Shi'a uprisings were brutally suppressed in mid-Euphrates region of Iraq , and in parallel an anti-conscription Kurdish uprising in the north and a Yazidi revolt in Jabal Sinjar were crushed in 1935 . Throughout the period political instability led to an exchange of numerous governments . Bakr Sidqi himself ascended to power in 1936 , following a successful coup d'état
Simele massacre
Simele massacre
Kingdom of Iraq