And that concludes our live coverage of the report on CIA interrogation methods, and the reaction to it. You can keep up to date with themain developments of the story here.
- A long-delayed Senate report says CIA used "brutal" interrogation techniques post 9/11
- Some al-Qaeda suspects were kept sleep deprived for 180 hours
- The Senate Intelligence Committee also says the CIA misled the White House about it
- Committee chair Dianne Feinstein calls it "a stain" on American values
- CIA says there were mistakes but argues it did stop terror attacks and save lives
Today's damning report was from the Democratic members who make up a majority on the Senate intelligence committee. But the minority Republicans have alsopublished their own findings, in which they attack the "strongly held biases" of the main report.
George Tenet, who was CIA director during 9/11, says the interrogation programme led to the capture of al-Qaeda leaders and "saved thousands of American lives". He told Associated Press the report failed to appreciate the fear at the time that more attacks were on the way. "It was a ticking time bomb every day," he said.
The report also includes what is effectively a resignation email from the CIA chief of interrogations, because of the programme.
Editor, Echo Chambers
The report says President George W Bush did not want to know where the interrogation sites were, in case he accidentally disclosed them. On Sunday,he told CNN that CIA staff were "patriots" and the report was "way off base".
Glenn Carle, former CIA agent, tells the BBC it's important for the US to "recognise its mistakes".
The report says detainees were humiliated by undergoing painful procedures and told they would only escape CIA custody in a coffin.
The Senate report notes the CIA did not know how many people it had imprisoned, and did not appear to correctly count detainees in a 2008 review.
BBC News, Warsaw
Polish Prime Minister Ewa Kopacz (below) has said the CIA report will not lead to a worsening of the country's relations with the US. Prosecutors in Poland have been investigating allegations that the country hosted a CIA black site since 2008. The investigation is ongoing, secret, and has yet to publish any findings.
In July the European Court of Human Rights ruled that Poland had violated the rights of two al-Qaeda suspects, Abd al-Rashim al-Nashiri and Abu Zubaydah when it allowed the CIA to detain, interrogate and torture them in a secret centre in Poland. The Polish government is appealing against the ruling.
"After 9/11 there were things that happened that were wrong - and we should be clear about the fact they were wrong," says UK Prime Minister David Cameron, when asked about the report during a press conference with Turkish Prime Minister Ahmet Davutoglu in Ankara.
The Washington Posthas filled in more details about officials worried by potential violent reactions to the report's contents.
"The troops on heightened states of alert are mostly Marines, a Pentagon official said. The units involved include a crisis-response unit that has Marines in Sigonella, Italy, and Moron, Spain; a second crisis-response unit with troops in Kuwait and Iraq; and fleet anti-terrorism security teams, 50-man units of Marines that are typically called upon to reinforce US embassies."
One of the most important case studies in the report is the one about a detainee named Abu Zubaydah. He was one of the first detainees to be subjected to waterboarding. The report provides new details about his treatment and says CIA officers concluded that he "should remain incommunicado for the remainder of his life". This could have given the CIA officials more freedom to subject him to harsh treatment - since they believed he would never have a chance to provide an account of what happened to him. Zubaydah is now held at Guantanamo's Camp 7, an area that is off-limits to journalists.
For those readers just joining us, a report by a US Senate committee has accused the CIA of employing ineffectual but brutal interrogation tactics on al-Qaeda suspects after 9/11. It also says the intelligence agency misled the country about what they were doing. There's a summary ofkey points here.
After she finished her Senate speech, Dianne Feinstein was very much in demand. She is the first woman to hold the vaunted position of overseeing 16 intelligence agencies and you can read more about herin this profile.
The Libyan Islamist, Abdul Hakim Belhaj,told the BBC two years ago that he had been tortured:
"I was kidnapped at Bangkok airport and my family and I were tortured by the CIA and of course this continued when I was handed to the Libyan authorities. I was tortured but what was more agonising is what happened to my ill and pregnant wife back then. When we were detained in Bangkok airport we stayed for days in a small cell that was very crowded. My wife was brutally tortured. I was beaten, hanged from a wall. I was put under so much psychological pressure during my interrogation. "
Top CIA officials in charge at the time have responded to the reportin an op-ed in the Wall Street Journal, calling it a "one-sided study marred by errors of fact and interpretation - essentially a poorly done and partisan attack on the agency that has done the most to protect America after the 9/11 attacks".
BBC security correspondent
tells the BBC's Outside Source radio programme that 9/11 mastermind Khalid Sheikh Mohammed was waterboarded more than 100 times but gave no useful intelligence
Former Guantanamo Bay detainee Moazzam Begg tells the BBC he suffered such terrible treatment at the US' Bagram base in Afghanistan he was "looking forward" to going to Guantanamo.
Some Republicans have objected to the report's release and disputed its contents. But Republican Senator John McCain, who was tortured in Vietnam as a prisoner of war, has welcomed it. Speaking straight after Senator Feinstein, he said: "We gave up much in the expectation that torture would make us safer. Too much."
Two psychologists with survival training were contracted to develop the interrogation techniques, the report says, "Neither psychologist had any experience as an interrogator, nor did either have specialized knowledge of al-Qa'ida, a background in counterterrorism, or any relevant cultural or linguistic expertise."
Mr Obama banned the use of interrogation techniques when he took office in January 2009, but the report says the CIA programme effectively ended before then.
BBC News, Washington
BBC security correspondent
This report makes deeply uncomfortable reading but it shines a much-need torch into some dark places. The fact that 'Enhanced Interrogation Techniques' (EIT), or torture by any other name, was stopped years ago or that some people at the top of the US administration may not have known its full extent, does not excuse the fact it took place at all.
After going through 6m pages of documents the authors concluded that in none of the cases they looked at did these brutal methods stop a terrorist attack. Meaning that America's reputation, and by extension that of the wider West, has been sullied for no tangible gain.
This will lay the US open to charges of hypocrisy, making it far harder for the West to criticise brutal and dictatorial regimes. It may also encourage terrorists to justify their atrocities by pointing to this past abuse. It can only be hoped this report's publication means these practices will be confined to history's dustbin.
As John Rizzo (formerly CIA) wrote in his book, Company Man, "the bipartisan leadership of Congress (the so-called Gang of 8) had been briefed by the CIA on the newly approved techniques, including waterboarding, and expressed no concern whatsoever".
His account raises questions about the congressional leadership. Why didn't they say at the time that they believed the harsh interrogation methods were wrong? Members of Congress could have told Rizzo and the other CIA officials that they didn't want the detainees to be treated like this.
The report also goes into detail about conditions at the CIA's main black site, known as COBALT in the report.
Several years ago John Rizzo, the former acting general counsel of the CIA, told me that the leaders of Congress knew exactly what the CIA officers were doing with the detainees at the black sites - and didn't object.
The report details an "aggressive phase of interrogation" for detainee Abu Zubaydah where he was confined to a coffin-sized box for a total of 266 hours. He was kept in an even smaller box for 29 hours.
Former CIA agent Michael Scheuertold the BBC that the report could provoke more violence. "What I worry about is threats to Americans or Brits or French or Germans as a result of the inciting nature of this report."