This edited book provides an insight into the new approaches, challenges and opportunities that characterise open source intelligence (OSINT) at the beginning of the twenty-first century. It does so by considering the impacts of OSINT on three important contemporary security issues: nuclear proliferation, humanitarian crises and terrorism.

"This volume constitutes a useful and informative compendium in a newly developing field with fluid boundaries, which is beneficial to those both new to or even experienced in this field." (Matt Inness, JIPSS Journal for Intelligence, Propaganda and Security Studies, Vol. 9 (1), 2015)