Britain's Attorney General Geoffrey Cox says a revised divorce deal with the European Union has not given Britain legal means of exiting the so-called backstop arrangement unilaterally if "intractable differences" arise.
Cox's advice is crucial to winning over eurosceptic lawmakers in Prime Minister Theresa May's Conservative Party.
She had hoped that revisions to a Brexit deal over the Irish backstop, or protocol, secured late on Monday would offer enough assurances to get her deal through parliament.
"However, the legal risk remains unchanged that if through no such demonstrable failure of either party, but simply because of intractable differences, that situation does arise, the United Kingdom would have ... no internationally lawful means of exiting the Protocol's arrangements, save by agreement," Cox's advice says.
