My Lords, some 20 years ago, India and Pakistan came within a hair’s breadth of nuclear weapon exchange. As the CDI at the time, I was shocked to discover that a lot of opinion-makers and decision-makers on both sides felt that it was quite practical to have a nuclear war and to use nuclear weapons for war fighting. There was no understanding of nuclear deterrent theory and absolutely no understanding of the fallout patterns for the targets that both sides had selected, and we embarked on a major programme of trying to teach those things. Has that continued and have we resolved those issues within both countries? There is absolutely no doubt that nuclear weapons are not war-fighting weapons.