[ by Charles Cameron — for global perspective ]
Hoffman and Reinares‘ The Evolution of the Global Terrorist Threat: From 9/11 to Osama bin Laden’s Death offers 700 pages of densely-packed information about global, ans they do mean global, terrorism since 9-11. Contributors include Peter Neumann, Paul Cruickshank, J-P Filiu, Seth Jones, Rohan Gunaranta, Ami Pedahzur, Thomas Hegghammer, C Christine Fair.
Ganor Boaz‘ Global Alert, which I just received, appears to offer its own definition of the topic, then take a refreshingly clean, unsentimental look at the field.
Both are recommended.