Karen Greenberg was quoted in a New York Times article about an American suspected of joining the Islamic State who was apprehended in Iraq.
Although domestic plots from the Islamic State may cause alarm, fighting abroad has been the driving force among those in the United States inspired by the group, said Karen J. Greenberg, executive director of the Center on National Security at the Fordham University School of Law. All told, almost all of those charged were American citizens or permanent residents. About 40 percent had converted to Islam. Nearly three-quarters were under 30, and all but 12 were male.