“There was expectations that the fights there, the operation there might be extended for several months, even for several years. But within a few weeks it ended, because obviously the Taliban wasn't a real force.”

“I am in the process of trying to decide whether I can make a substantive and productive contribution to the policy-making process. I was always there because I wanted to work on the pressing issues of the day - I'm interested in energy, I'm interested in the climate bill and technology policy.”