The Bangladesh genocide was the ethnic cleansing of Bengalis residing in East Pakistan during the Bangladesh Liberation War, perpetrated by the Pakistan Army and the Razakars militia. It began on 25 March 1971, as Operation Searchlight was launched by West Pakistan to militarily subdue the Bengali population of East Pakistan; the Bengalis comprised the demographic majority and had been calling for independence from the Pakistani state. Seeking to curtail the Bengali self-determination movement, erstwhile Pakistani president Yahya Khan approved a large-scale military deployment, and in the nine-month-long conflict that ensued, Pakistani soldiers and local pro-Pakistan militias killed between 300,000 and 3,000,000 Bengalis and raped between 200,000 and 400,000 Bengali women in a systematic campaign of mass killing and genocidal sexual violence.