It is a shameful episode in the US history and the bottom line, said Ray McGovern, former CIA officer. If you want to encourage people to become terrorists, there is no better place to do it than in Abu Ghraib or Guantanamo, he added.

British resident Shaker Aamer was held at Guantanamo Bay for almost 14 years, and has spoken to the media for the first time since his release in October.