waterboarding

thumb|Two United States soldiers and one South Vietnamese soldier waterboard a captured North Vietnamese prisoner of war near [[Da Nang. Published on the front cover of The Washington Post on 21 January 1968.]] Waterboarding or controlled drowning is a form of torture in which water is poured over a cloth covering the face and breathing passages of an immobilized captive, causing the person to experience the sensation of drowning. In the most common method of waterboarding, the captive's face is covered with cloth or some other thin material and immobilized on their back at an incline of 10 to 20 degrees. Torturers pour water onto the face over the breathing passages, causing an almost immediate gag reflex and creating a drowning sensation for the captive. Normally, water is poured intermittently to prevent death; however, if the water is poured uninterruptedly it will lead to death by asphyxia. Waterboarding can cause extreme pain, damage to lungs, brain damage from oxygen deprivation, other physical injuries including broken bones due to struggling against restraints, and lasting psychological damage. Adverse physical effects can last for months, and psychological effects for years. The term "water board torture" appeared in press reports as early as 1976.

Waterboarding has been used in diverse places and at various points in history, including the Spanish and Flemish Inquisitions, by the United States military during the Philippine–American War, by Japanese and German officials during World War II, by the French in the Algerian War, by the U.S. during the Vietnam War and the war on terror, by the Pinochet regime in Chile, by the Khmer Rouge in Cambodia, by British security forces during the Troubles, by South African police during the Apartheid era and by Israel during the Gaza genocide. Historically, waterboarding has been viewed as an especially severe form of torture.