In any military campaign it is necessary to measure how well one is doing; in unconventional, counterinsurgency warfare, measuring progress is especially difficult; and in Afghanistan, the attempt to do so is doing more harm than good, and for fundamental reasons.
"Why Operations Assessments Fail—It’s Not Just the Metrics,"
Naval War College Review: Vol. 64
, Article 8.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol64/iss4/8