https://www.ecfr.eu/page/-/popular_demand_for_strong_european_foreign_policy_what_people_want.pdf
http://www.ips-journal.eu/regions/europe/article/show/the-new-east-bloc-is-open-for-business-2523/
https://publications.parliament.uk/pa/cm201719/cmselect/cmfaff/514/514.pdf
https://lawliberty.org/why-we-should-care-that-tariffs-are-taxes/