Efraín Ríos Montt

José Efraín Ríos Montt was a Guatemalan military officer who served as de facto President of Guatemala from 1982 to 1983. His brief tenure as chief executive was one of the bloodiest periods in the long-running Guatemalan Civil War. Ríos Montt's counter-insurgency strategies significantly weakened the Marxist guerrillas organized under the umbrella of the Guatemalan National Revolutionary Unity (URNG), while also leading to accusations of war crimes and acts of genocide perpetrated by the Guatemalan Army under his leadership.