https://www.koerber-stiftung.de/fileadmin/user_upload/koerber-stiftung/redaktion/the-berlin-pulse/pdf/2020/Koerber_TheBerlinPulse_Grafikteil_Deutsch.pdf
https://www.brookings.edu/articles/is-the-global-economy-deglobalizing-and-if-so-why-and-what-is-next/
http://www.realclearworld.com/articles/2017/04/17/a_us-uk_trade_agreement_and_the_trump_re-election_campaign_112297.html