To ask the Secretary of State for Defence which potential aggressors he expects to be deterred by the Trident nuclear deterrent programme in 2024. (276260)

The 2006 White Paper: The Future of the United Kingdom's Nuclear Deterrent (Cmd 6994), section three, paragraphs 3-8 to 3-13, states that over the next 20 to 50 years we can foresee nuclear risks in three areas: Re-emergence of a major nuclear threat; emerging nuclear states and state-sponsored terrorism.