There isnt going to be one. Why we continue to rate a disruptive exit on March 29 and GBP crash higher than Market, and still major hazzard.
Brexit Backstop is UK governments OWN option to guarantee future UK Trade policy decisions will not breach its obligations under GFA, ie NOT to create ANY circumstance that would breach their 1998 NI Peace Treaty obligations, by necessitating a Hard Border between NI and Ireland.
UK are now seeking to time limit that guarantee. Time limit a highly sensitive Peace Agreement?