While looking into counterterrorism tools, I have found many references to 'tree' diagrams that eerily resemble a scene in the 1966 award-winning film "La Bataille d'Alger". A version of this can be found in an academic paper by a researcher at M.I.T. interested in Order Theory... In fact, a number of books address the use of mathematical methods in counterterrorism. I hope to read some of these monographs soon.
About a month ago I mentioned an article on policy transfers in Central Europe. Today, I have found a similar, more academic article on counterterrorism policies in Kyrgyzstan. Like the former, the latter article focuses on similarities more than variance. The author also places a heavy emphasis on external factors. This said, the theories are well employed and the importance of external factors is rightly highlighted.
In my efforts to define counterterrorism, I have found this nice little article by Teun van Dongen. It should be of interest to anyone seeking to explain the causes and effects of national counterterrorism policies. I will critique this paper in a book chapter I am preparing.
In order to develop a conceptualisation of counterterrorism in NATO member states, I am reading articles related to this topic. Today, I found an article by the EUROPEUM institute on "counterterrorism policies in Central Europe". An interesting topic addressed therein is the question of Europeanisation and internationalisation -- i.e. the idea that counterterrorism policy in some states is based on foreign templates. Although such diffusion concepts might help explain what drives policy reform worldwide and the homogenisation thereof, they do not seem to help explain any degree of variation in counterterrorism policies.