Mark M. Lowenthal's trusted guide is the go-to resource for understanding how the intelligence community's history, structure, procedures, and functions affect policy decisions. In this Sixth Edition of Intelligence: From Secrets to Policy, the author highlights new challenges facing the intelligence community, examining NSA programs, UAVs, the impact of social media, and the effects of the Snowden leaks on collection and Congressional oversight. An expanded chapter on oversight scrutinizes the role of the FISA court, OMB, and GAO.