For the last three years, it has been Government policy that border arrangements between Northern Ireland and the Republic after Brexit would not include checks and controls—that is enshrined in UK law—but now the Prime Minister has announced that there will be customs checks in Northern Ireland. [Interruption.] Those are the words he used. He has also entertained the possibility that Northern Ireland will never enter the regulatory zone of which he speaks because, if the Assembly and the Executive do not agree to do so, it will not happen. As a result, he has abandoned that commitment and risks a return to a hard border. How is that consistent with the joint declaration of 2017 signed by his predecessor, with the Good Friday agreement and with the peace and stability in Northern Ireland that has been so hard won?