(War On The Rocks) I recently spent several weeks in the slum districts of Nairobi, researching al-Shabaab’s criminal activities in the Horn of Africa. I expected to learn about the traditional criminal practices of terrorist groups: drugs, arms, money laundering, and perhaps even a regional particularity like sugar smuggling. What I wasn’t expecting to discover was a highly structured, hierarchical network in which sex workers sell information gleaned from their customers — specifically, corrupt police officers — to al-Shabaab.