Some more interesting stuff said today, starting with Barnier saying that a transitional period isn't a given and setting out where the UK is falling short. No doubt this will have wound up the Brexiteers in the Conservative party and, given what he said about border checks between Ireland and NI, some politicians North and South of the border. I suppose the response by Davis was to be expected.
However, while I'm a confirmed Remainer (or as Resurrection would no doubt prefer, a "Remoaner"), on this I think Barnier is ignoring a big and immovable issue. While in political and legal terms he might be right i.e. if the 'deal' doesn't offer what the EU wants on nationality, precedence to EU courts etc which might mean the EU member states rejecting the deal and the Art 50 'clock' doesn't stop, theoretically and legally the UK leaves the EU on time and should be treated by the EU as a 'third country'. This implies a lot like WTC tariffs. But the point I think he is missing is the practical one. For the EU to treat all trade with the UK as 'third country' it needs frontier controls and checks over that trade. My guess is that the ports and airports within the EU that handle the bulk of trade with the EU won't be remotely ready to facilitate such checks by the time the Art 50 period elapses. The facilities, systems, logistics etc needed to implement such controls will take years to put in place and that seems to me to justify a transition period regardless of any other issue . No legal or political imperative is going to overcome that practical difficulty.