New rules adopted by the US Congress and Barack Obama has forbidden the use of testimony obtained through cruel treatment or torture. It comes as 9/11 suspects Khalid Sheikh Mohammed and his co-defendants appear for a hearing at Guantanamo Bay, Cuba.
General Mark Martins, the chief prosecutor, said the commission provides many of the same protections that defendants would get in civilian court. "I'm confident that this court can achieve justice and fairness," he said.
More top news
Scientists believe 400,000 cases of womb cancer have been avoided over the last 50 years by women taking the contraceptive pill.
Tony Blair could be made to stand trial for war crimes over the invasion of Iraq, Labour leadership frontrunner Jeremy Corbyn has said.
The number of fines handed out to hauliers found carrying illegal immigrants into the UK has more than tripled in the last three years.