Do The Brits Think Afghanistan Is Lost?

An interesting leaked (and possibly inaccurate) conversation from Le Canard Enchaine in France. Money quote allegedly from the British ambassador:

Within five or ten years from now... (it would be positive) if Afghanistan were governed by an acceptable dictator... This outlook is the only realistic one and we should prepare our public opinion to accept it... In the short term we should dissuade the American presidential candidates from getting more bogged down in Afghanistan.... The American strategy is destined to fail.