Defense Secretary Robert Gates offers no timeline for a US withdrawal from Afghanistan and states that the length of US combat engagement there is a “mystery.” When asked at a press conference how long he thinks American combat forces will be fighting active war in Afghanistan, Gates, a former CIA director, responds: “[I]n the intelligence business, we always used to categorize information in two ways, secrets and mysteries.… Mysteries were those where there were too many variables to predict. And I think that how long US forces will be in Afghanistan is in that area.” When pressed further, he reasserts the unpredictability of the proposition, but guesses that “a few years” may be required to defeat the insurgency militarily, and that the larger enterprise of institution-building and economic development will require US engagement for decades. Responding to a question concerning a statement made by incoming British Army Chief General Sir David Richards that British and international engagement in Afghanistan could last up to 30 or 40 years (see August 8, 2009), Gates replies that he does not agree that troops will be committed in combat operations for that long, but agrees with Richards’s later distinction that wider engagement in areas such as economic development and governance will be a “decades-long enterprise.” Joining Gates at the press conference is Joint Chiefs Vice Chairman General James Cartwright. Cartwright backs Gates’s “mystery” assessment, but he links the possibility of force withdrawal to the political situation and handing over competencies to the Afghan National Security Forces. [Associated Press, 8/13/2009; U.S. Department of Defense, 8/13/2009]