In an appearance on the Charlie Rose television show on October 5, 2007, counterinsurgency expert David Kilcullen said: “One of the lessons of the twentieth century…was that ‘there has never been a successful counterinsurgency that took less than 10 years.’ (But, he emphasized, he wasn’t thinking about U.S. forces being in combat for 10 years.)”
– Thomas E. Ricks, The Gamble, Page 315