Trident Mr. Ancram To ask the Secretary of State for Defence which potential aggressors he expects to be deterred by the Trident nuclear deterrent programme in 2024. Mr. Bob Ainsworth 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.