Wilkerson was responsible for the review of information from the Central Intelligence Agency used to prepare Powell for his February 2003 presentation to the United Nations Security Council. His failure to realize that the evidence was faulty has been attributed to the limited time (only one week) that he had to review the data. The subsequent developments led Wilkerson to become disillusioned: "Combine the detainee abuse issue with the ineptitude of post-invasion planning for Iraq, wrap both in this blanket of secretive decision-making...and you get the overall reason for my speaking out."