Brexit: Legal advice warns of Irish border 'stalemate'
Newly published documents show the PM was told an arrangement designed to prevent a hard Irish border could last "indefinitely" and the UK could not "lawfully exit" without EU agreement. The Democratic Unionists said this would be "devastating" for the UK.
In the six-page letter written on 13 November but published on Tuesday, Mr Cox said the "current drafting" of the backstop "does not allow for a mechanism that is likely to enable the UK to lawfully exit the UK wide customs union without a subsequent agreement".
https://www.bbc.co.uk/news/uk-politics-46451970