Whether you support or oppose them, nuclear weapons have become an entrenched part of the British security discussion, with periods of major debate - in the 1960s and 1980s especially - leaving a lasting impact on the national psyche. But it’s rare that we have the chance to see governments - in the UK or elsewhere - step back and engage in truly forward-thinking, public consideration of why that is the case, and what the alternatives might be. This could be one of those moments for the UK. Could. Whether it will or not, remains to be seen.