https://ecipe.org/publications/the-gini-trade-index-what-can-we-learn-from-a-new-trade-indicator/
https://www.foreignaffairs.com/world/why-world-still-needs-trade
https://www.socialeurope.eu/the-discreet-but-dubious-charm-of-tax-treaties
http://blogs.lse.ac.uk/brexit/2017/10/24/the-eu-isnt-protectionist-its-one-of-the-most-open-economies-in-the-world/