FOR USE MONDAY, DEC. 30, 2013 AND THEREAFTER - FILE - In this July 23, 2013 file photo, United Nations peacekeepers search a house suspected to have been used by members of al-Qaida’s North African branch in Timbuktu, Mali. The al-Qaida cell occupied Timbuktu for 10 months until January 2013. 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 one of them spent for a single lightbulb. 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)