http://www.nationalcrimeagency.gov.uk/publications/european-arrest-warrant-statistics
http://www.bertelsmann-stiftung.de/fileadmin/files/Projekte/Migration_fair_gestalten/IB_PolicyBrief_Einwanderungsgesetz_082017_ENG.pdf
https://www.oecd.org/corruption/anti-bribery/Switzerland-Phase-4-Report-ENG.pdf
https://rusi.org/event/dynamic-security-threats-and-british-army