Five years after 9/11, we question whether or not terrorist activity has actually decreased. Terrorist networks still span the globe and, some argue, they are more powerful than ever. Yet in this era of rigid security and U.S.-led wars on multiple continents, countries are at odds about how to deal with the looming threat--and chaotic aftermath--of terrorist acts. In Countering Terrorism, Rohan Gunaratna and Michael Chandler sift through...