My Lords, first, I want to say how sad I am at the passing of the noble Lord, Lord Sacks, who was a great member of our community in this country and a very excellent
Member of our House. It is a very sad day for us. He stood up for faith and he explained faith in a way that very few were able to do.
In my view, the rule of law is a fundamental part of our constitutional arrangements; that extends to international law as well as our domestic law. During my time as Lord Chancellor, I was privileged to visit a number of countries where it was obvious that our national reputation was built on that fact to no small degree. I confess to my reaction of shock when I heard the Secretary of State for Northern Ireland intimate the proposal that is the subject of these amendments. Parliament is, of course, sovereign in domestic law. Since the House of Lords decided in Anisminic that the then common form of clause-protecting decisions from intervention by the courts protected only good decisions, such protective clauses have become rarer.
It is also of fundamental importance in the international effort to preserve peace in the world. Your Lordships will remember the heavy burden borne by the noble and learned Lord, Lord Goldsmith, in having to give advice on the relevant international law relating to Iraq. I find it poignant that we are debating this immediately after our national recognition of the tremendous cost of war inflicted on our nation. I should of course make it clear that there are lawful ways of getting out of a treaty, as provided by the Treaty of Vienna.
I do not wish to take any part in the discussions taking place tonight, including by my predecessor—whom I am glad to follow—into the situation that arises on the present discussion of the protocol. In my opinion, however, the withdrawal agreement, and the Northern Ireland protocol in particular, make it as plain as language can that its provisions are without prejudice to the provisions of the 1998 agreement in respect of the constitutional status of Northern Ireland. That principle can be used in the proper interpretation of the somewhat conflicting provisions that exist in the protocol itself, but the point is that it makes it absolutely plain that the 1998 agreement is to be respected as part of, and as a prerequisite to, the implementation of the agreement. I therefore consider it unnecessary to say, as this part does, that the Government authorise the possible breach of international law.