https://www.wilsoncenter.org/article/360deg-view-policies-needed-secure-shipping-chokepoints
http://www.bbc.com/news/world-europe-40653756
https://www.diepresse.com/5837400/fluchtiger-wirecard-manager-war-geheimer-fpo-informant
http://library.fes.de/pdf-files/iez/13375.pdf