https://www.gov.uk/government/news/pms-european-council-press-statement-20-october-2017
https://socialeurope.eu/brexit-why-does-northern-ireland-matter-so-much
https://www.parliament.uk/documents/lords-committees/eu-select/Third-Interparliamentary-Forum-on-Brexit-statement.pdf
http://fedtrust.co.uk/brexitthe-conservative-centre-cannot-hold/