Illicit Drugs and the Terrorist Threat: Causal Links and Implications for Domestic Drug Control Policy [Updated June 22, 2004] [open pdf - 110KB]
From the Summary: "Different drugs, different trafficking routes, and different organizations have different relationships to terrorist threats. Therefore it might be possible to improve domestic security by targeting drug law enforcement on those drugs, routes, and organizations with the strongest known or potential links to terror. However, doing so would require new analytic capacities and decision-making strategies for all the agencies involved in drug law enforcement and there is no assurance that the policies that best implement the mission of protecting Americans from drug abuse will also perform best in protecting the country from terrorism. Indeed, the interests of ideology-driven terrorists and money-driven drug traders can sometimes diverge, as when increased resources deployed against terrorists adversely affect the activities of drug traders with no ties to terrorists."
CRS Report for Congress, RL32334