I think it can be halted - I've seen a number of high-level EU politicians say that it's possible to stop the process if the UK decides to. It was this that th

I think it can be halted - I've seen a number of high-level EU politicians say that it's possible to stop the process if the UK decides to. It was this that the Lib Dems were (weakly) campaigning on in the election - to give the people the vote whether to accept the deal or stay in the EU after the negotiations were complete.