What does the week ahead hold for the Brexit debate?

The EU is expected to publish a letter of clarification emphasising that any use of the Northern Ireland backstop designed to keep the land border open would only ever be temporary, although it will be a surprise if it makes much difference to the Commons arithmetic.Theresa May will also make a public appeal for support in a speech in Stoke-on-Trent in the morning, while MPs move on to day four of the Brexit debate, with Philip Hammond, the chancellor, closing proceedings.If May allows it, MPs w