https://infacts.org/theresa-mays-flip-flops-u-turns/
https://ec.europa.eu/commission/sites/beta-political/files/outline_of_the_political_declaration.pdf
http://www.migrationobservatory.ox.ac.uk/resources/reports/unsettled-status-which-eu-citizens-are-at-risk-of-failing-to-secure-their-rights-after-brexit/
http://www.conservativehome.com/parliament/2016/04/theresa-mays-speech-on-brexit-full-text.html