https://www.brookings.edu/research/a-post-american-europe-and-the-future-of-u-s-strategy/
https://institute.global/news/progressive-politics-populist-era?utm_source=Institute+Interest&utm_campaign=813e2f7781-EMAIL_CAMPAIGN_2018_11_14_09_00&utm_medium=email&utm_term=0_a778d447d9-813e2f7781-65414641
https://ukandeu.ac.uk/the-german-or-french-way-international-interdependence-vs-european-sovereignty/?mc_cid=50b7d10115&mc_eid=815b1928ec
https://www.iedonline.eu/download/2017/IED-REPORT-Bratislava-2017.pdf