https://securingdemocracy.gmfus.org/wp-content/uploads/2020/08/ASD-Covert-Foreign-Money.pdf
https://www.europarl.europa.eu/sides/getDoc.do?pubRef=-//EP//NONSGML+TA+P6-TA-2009-0213+0+DOC+PDF+V0//EN
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https://www.ceps.eu/wp-content/uploads/2021/03/PI2021-05_The-power-surplus.pdf