FILE - In this July 23, 2013 file photo, United Nations peacekeepers stop to greet Malian soldiers at a checkpoint, during a patrol on the outskirts of Timbuktu, Mali. For 10 months until January 2013, the city of Timbuktu was occupied by al-Qaida’s branch in North Africa. When they fled, they left behind thousands of pages of documents, including over 100 receipts, showing that they assiduously tracked their cash flow, down to the $0.60 cents one of them spent for a single light bulb. The accounting system on display suggests that far from being a fly-by-night terror organization, al-Qaida is attempting to behave like a corporation. (AP Photo/Rebecca Blackwell, File)