let's talk to anton speed jack, who's a senior fellow, they tony blair institute where he specializes in u k. u relations. he joins us from london. welcome to d. w. explain to was why it would matter if the u. k. a chose to walk away from this deal unilaterally. thanks for having me. i think it's really important to take a step back here and go back to the autumn of 2019. when we were in agreement between the u. k and the after a long period of the nation, you will remember that a very purchased process. and you can the manage to find a deal which included so called northern ireland protocol which avoided any kind of food or checks between the republic of ireland and northern ireland. but instead created some restrictions in terms of the movement of goods between great britain and within ireland. now this still was really important because as we know, the history of northern ireland is one of, of why ones. and it is really essential to preserve the good friday agreement and the protocol does, does exactly that. but if it, if it impinges on people's everyday lives in britain chooses to