http://www.telegraph.co.uk/news/2017/05/23/66m-migrants-waiting-cross-europe-africa-report/
https://ukandeu.ac.uk/trade-migration-and-brexit/
http://blogs.lse.ac.uk/brexit/2018/05/15/switzerland-wanted-more-immigration-controls-but-economic-self-interest-will-probably-prevail/
https://www.politico.eu/article/italy-far-right-leader-giorgia-meloni-migration/