A short report 'Challenging the Myth of the Drug-Terror Nexus in the Sahel' from the West Africa Commission on the Impact of Drug Trafficking on Security, Governance and Development in West Africa (WACD) by a German author.

In summary:
This paper reviews the evidence for the links between drug smuggling and extremist activity in the Sahel-Sahara region. While it demonstrates that such links clearly exist, the paper argues that the widespread talk of a drug-terror nexus in the Sahel is misleading, for several reasons. First, much of the evidence presented as basis for such claims can either be easily debunked, or is impossible to verify. Second, rather than the two extremist groups as such, involvement in drug trafficking appears to concern individuals and groups close to, or within, MUJAO and AQIM: within both groups, members are driven by multiple and, at times, conflicting motivations. Third, numerous other actors are playing an equally or more important role in drug smuggling, including members of the political and business establishment in northern Mali, Niger and the region’s capitals, as well as leaders of supposedly ‘secular’ armed groups. Fourth, the emphasis on links between drug trafficking and terrorism in the Sahel serves to obscure the role of state actors and corruption in allowing organized crime to grow. Fifth, the profits derived from kidnap-for-ransom played a much more significant role
in the rise of AQIM and MUJAO.
Link:http://www.wacommissionondrugs.org/w...2013-08-19.pdf