
https://ukandeu.ac.uk/the-uk-government-approach-to-the-northern-ireland-impasse-is-an-affront-to-democracy/?mc_cid=25c6e608f7&mc_eid=815b1928ec

http://www.lisbon-treaty.org/wcm/the-lisbon-treaty/treaty-on-european-union-and-comments/title-1-common-provisions/7-article-7.html

http://comprop.oii.ox.ac.uk/wp-content/uploads/sites/93/2018/07/ct2018.pdf