When Kenyan police arrested six men in the vast Dadaab refugee camp near the Somali border last April, their ultimate aim was to dismantle a decades-old sugar smuggling trade that is funding Somali militants waging war on Kenya.
The arrests, coming weeks after four al Shabaab gunmen massacred 148 people at nearby Garissa university, were part of Nairobi's new strategy to choke off the flow of money to Islamists whose cross-border raids have hammered Kenya and its tourism industry.