§ Mr. CohenTo ask the Secretary of State for Defence whether the reduction in nuclear explosive firepower calculated by his Department assumes the stockpile of WE177 bombs to be deployed at(a) their highest yield, (b) their lowest yield or (c) a mixture of yields.
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§ Mr. HanleyIt is not our practice to discuss details of nuclear weapon design, but the anticipated reduction of more than 25 per cent. in the explosive power of the United Kingdom's operational nuclear inventory when Trident is fully in service compared with 1990 is based on the full yield of all the weapons in the United Kingdom's stockpile.