https://www.wto.org/english/tratop_e/tpr_e/s434_e.pdf
https://www.politico.eu/wp-content/uploads/2020/05/LetterVDL12052020EN.pdf
https://www.eia.gov/energyexplained/us-energy-facts/imports-and-exports.php
https://www.socialeurope.eu/the-discreet-but-dubious-charm-of-tax-treaties