An assessment, pro & con on: http://counterterrorismblog.org/ (Currently first item).
Secondly there is an old thread on assassination of high value targets etc: http://council.smallwarsjournal.com/...ead.php?t=4025 and a June 2009 update by Steve Metz, with a PPT on the topic: http://www.strategicstudiesinstitute...nterest-14.pdf
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