https://socialeurope.eu/a-european-solidarity-pact
https://www.bloomberg.com/politics/articles/2017-04-26/brexit-risks-opening-pandora-s-box-of-trade-disputes-for-britain?cmpid=BBBXT042617_BIZ&utm_medium=email&utm_source=newsletter&utm_term=170426&utm_campaign=brexit
https://eml.berkeley.edu/~dromer/papers/RomerandRomerFinancialCrises.pdf
https://www.socialeurope.eu/europes-defence-crisis-why-more-spending-alone-will-not-keep-the-continent-safe