Tequila, thanks for the link. Found pages 9 and 13 of particular interest, but in the end I think this quote sums it up.

It is best, in Helmand, to look at the situation in terms of normal human motivation, rather than as a clash of ideology, religion, or ethnicity.

However, this may not impact the overall situation in the country. The presence of foreign forces has skewed the debate; in Washington or London, much more attention is given to “strategic interests” and “global terrorism” than to local grievances and concerns.