http://www.ibtimes.com/political-capital/defense-department-war-terror-has-cost-250-million-day-16-years-2608639
http://www.mintpressnews.com/us-opens-first-military-base-israel-adding-800-worldwide/232235/
https://www.thebalance.com/war-on-terror-facts-costs-timeline-3306300
http://www.globalissues.org/issue/245/war-on-terror