Iraqi regime tolerated and may even have helped Ansar al Islam against the common Kurdish enemy. However, the commission overall concluded that "to date [2004] we have seen no evidence that these or the earlier contacts ever developed into a collaborative operational relationship," and did not find proof "indicating that Iraq cooperated with al-Qaeda in developing or carrying out any attacks against the United States." This conclusion is consistent with the findings of various investigations into specific aspects of the Saddam Hussein/al-Qaeda relationship, including those conducted by the Central Intelligence Agency, Defense Intelligence Agency, Federal Bureau of Investigation, and National Security Council. The Senate Report of Pre-war Intelligence on Iraq also reviewed the intelligence community's conclusions and found that they were justifiable. Operation Iraqi Freedom documents The U.S. government released documents, called the 'Operation Iraqi Freedom documents', regarding which the Pentagon has cautioned it has made 'no determination regarding the authenticity of the documents, validity or factual accuracy.'" Some claim the information contained in some of the documents suggest Saddam and al Qaeda may have been willing to work together. 9/11 Commission member Bob Kerrey looked at some of the documents and "was careful to say that new documents translated last night by ABC News did not prove Saddam Hussein played a role in any way in plotting the attacks of September 11, 2001." Nevertheless, Kerrey stated that one of the documents suggests that "Saddam was a significant enemy of the United States." The Office of the Director of National Intelligence has already looked at the documents and warned that "amateur translators won't find any major surprises, such as proof Hussein hid stockpiles of chemical weapons." The Pentagon also went through the documents and released an official study of the documents; the study does not report on any evidence linking Saddam to al-Qaeda (see below). The 2006 Senate Select Committee on Intelligence concluded that "additional reviews of documents recovered in Iraq are unlikely to provide information that would contradict the Committee's findings or conclusions." Intelligence expert Steven Aftergood suggested that many are using the release of these documents as an opportunity to find "a retrospective justification for the war in Iraq." Bush Administration retracts its position On March 21, 2006, Bush sought to distance himself from the allegation of any link. He said: "First, just if I might correct a misperception, I don't think we ever said—at least I know