- https://www.bbc.com/news/world-europe-44313905
- https://www.europarl.europa.eu/sides/getDoc.do?pubRef=-//EP/...
- https://www.npr.org/2020/03/05/812499752/uncovering-the-cias...
- https://theintercept.com/2015/09/28/death-athens-rogue-nsa-o...