A secret FBI study found that anger over U.S. military operations abroad was the most commonly cited motivation for individuals involved in cases of homegrown" terrorism. The report also identified no coherent pattern to "radicalization," concluding that it remained near impossible to predict future violent acts. The study ... surveyed intelligence analysts and FBI special agents across the United States who were responsible for nearly 200 cases ... involving "homegrown violent extremists." The survey responses reinforced the FBI's conclusion that such individuals "frequently believe the U.S. military is committing atrocities in Muslim countries, thereby justifying their violent aspirations," [and] notes that between 2009 and 2012, 10 out of 16 attempted or successful terrorist attacks in the United States targeted military facilities or personnel. The report ... is dated December 20, 2012. The survey seems designed to look only at Muslim violent extremism. Perpetrators of more recent attacks have latched onto U.S. foreign policy to justify violence. In many of these cases, pundits and politicians focus on the role of religion, something Marc Sageman, a former CIA officer and author of "Leaderless Jihad: Terror Networks in the Twenty-First Century," describes as a "red herring," citing a history of shifting ideologies used to justify terrorist acts. "Politicians try very hard not to talk about foreign policy or military action being a major contributor to homegrown terrorism," Sageman says.