But Brown has 2 choices. Either go full bore with the US or completely evacuate and leave the yanks to their latest vietnam. Typically, lacking the courage of any conviction whatsoever, he seems to be determined to have the worst of both options. keep to the Fen Causeway
Victory in A-stan is unlikely and even if it weren't the UK doesn't have any really crucial interests there. Maintaining a token force to keep the Americans happy until they lose interest in the place seems to me to be the optimal choice. Peak oil is not an energy crisis. It is a liquid fuel crisis.