Jeremy Corbn: To ask the Secretary of State for Defence, pursuant to the Answer of 10 December 2014 to Question 217946, for what reasons publishing an analysis of the effects of a UK nuclear weapon would prejudice the defence of the UK.
Michael Fallon: Providing details of the possible effects of the UK's Trident system would enable deductions to be made that could prejudice national security and would or would be likely to prejudice relations between the United Kingdom and other States.