“The USA and its slaves like you are the greatest criminals on Earth.” (Tweet)Joseph A. Carter, Shiraz Maher, and Peter R. Neumann, “#Greenbirds: Measuring Importance and Influence in Syrian Foreign Fighter Networks,” International Centre for the Study of Radicalisation, April 2014, 26, http://icsr.info/wp-content/uploads/2014/04/ICSR-Report-Greenbirds-Measuring-Importance-and-Infleunce-in-Syrian-Foreign-Fighter-Networks.pdf.