Things are escalating fast in the row between the government and the DUP. Yesterday’s threat to vote against the Budget was followed by them abstaining on the agriculture bill. The message is clear: if we don’t like what you sign up to on the backstop, we’ll make it impossible for you to govern.
So, what is going on here? Well, a large part of it — as Katy Balls says on Coffee House — is about trust. The DUP suspect Downing Street and the civil service, in particular, of being ready to sell them out, and so aren’t inclined to believe their assurances.
One of the other problems, I am told by one of the Tory DUP handlers, is that while Number 10 has been giving the DUP a sugar-coated version of what backstop would mean, Barnier gave them the unvarnished one. I understand that he pointed out how the backstop would have more influence, the more the UK diverged from the EU.

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