https://www.openmarketsinstitute.org/publications/how-to-fix-supply-chains-break-the-chain
https://ecipe.org/wp-content/uploads/2021/09/ECI_21_PolicyBrief_12_2021_LY02.pdf
https://www.eia.gov/energyexplained/us-energy-facts/imports-and-exports.php
http://ec.europa.eu/trade/policy/in-focus/ceta/