LONDON (Reuters) – The United States must prosecute former President George W. Bush for torture if his admission in a memoir that he authorized waterboarding holds true, rights group Amnesty International said on Wednesday.

In “Decision Points,” published this week, Bush defended his decision to authorize waterboarding, a form of simulated drowning condemned by some as torture.

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Bush said the practice was limited to three detainees and led to intelligence breakthroughs that thwarted attacks and saved lives. He told NBC in an interview to publicize the book that his legal adviser had told him it did “not fall within the anti-torture act.”

Amnesty International’s Senior Director Claudio Cordone said in a statement: “Under international law, anyone involved in torture must be brought to justice, and that does not exclude former President George W. Bush.”

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