I was grateful to Hans Blix and the Weapons of Mass Destruction Commission for their thoughtful work in producing this report. Some of the Commission's recommendations on non-proliferation and disarmament have great merit, e.g. on Comprehensive Safeguards and the Additional Protocol. But not all remain relevant (e.g. on North Korea and Iran where recent UN Security Council Resolutions have changed priorities for action). I do not believe that a change in Nuclear Non-Proliferation Treaty institutional arrangements will bring about substantive change in the positions of states party to the treaty. Political will drives change in these areas. The UK continues to support early entry into force of the Comprehensive Nuclear Test Ban Treaty. Ratification by the remaining Annex II states is key.