The controversial interrogation technique known as waterboarding and used by the United States qualifies as torture, the U.N. human rights chief said on Friday.
"I would have no problems with describing this practice as falling under the prohibition of torture," the U.N. High Commissioner for Human Rights, Louise Arbour, told a news conference in Mexico City.
Violators of the U.N. Convention against Torture should be prosecuted under the principle of ’universal jurisdiction’ which allows countries to try accused war criminals from other nations, Arbour said.
"There are several precedents worldwide of states exercising their universal jurisdiction ... to enforce the torture convention and we can only hope that we will see more and more of these avenues of redress," Arbour said. SOURCE
Ultimately it will be up to the people to show up at the airport prior to the arrival of this or that criminal and arrest them because no government on Earth has clean enough hands to preach justice.