I thank the noble Lord for his contribution. It is clear that the sunset provision we are discussing relates to the arrangement with the agency; it does not cover the nuclear co-operation agreements. Those are separate agreements.
We have thought very long and hard about the sunsetting of this—I think it falls into the territory of known unknowns—and we believe that two years is
certainly too short and that five years is the right length. There may be circumstances that we cannot possibly foresee at this time that will make it necessary for the sunset clause to exist for slightly longer. We have now agreed—we hope, because nothing is agreed until everything is agreed—the implementation period. I think that noble Lords should take quite a lot of comfort in that implementation period in that, during that period, our safeguard arrangements will still be provided by Euratom. Indeed, it gives us an extra 21-month period for these arrangements to be put in place. Nevertheless, I think that the five-year period is appropriate. We have looked at the recommendations of the DPRRC and agree with them. A period of five years is the most appropriate time.