Over the period since the rejection of the Withdrawal Agreement, the Prime Minister’s tactic has been to try to bring the pro-Brexit wing of the Conservative Party, and the Northern Ireland Democratic Unionists, back on side. No.10 appear to have been successful in whittling the pro-Brexit wing’s nominal resistance to the Withdrawal Agreement (which was very wide ranging at the time of the vote on 15th Jan) down to just the Northern Ireland backstop – the failsafe mechanism in the Withdrawal Agreement to ensure that there will be no hard border on the island of Ireland, but which the Pro-Brexit wing fear is a trap to keep the UK permanently in customs and regulatory alignment with the EU. Until yesterday morning, No.10 hoped to achieve this without attempting to renegotiate the Withdrawal Agreement, something the EU has been adamant is not on the cards. But No.10’s aim for a legally binding side agreement looked unlikely to bring the Brexiteers on side. So on Tuesday the PM announced that she was willing to go back to the EU and to seek changes to the Withdrawal Agreement. This – some would say desperate – volte face by the Prime Minister is very significant background to yesterday’s votes in Parliament.