Nuclear weapons are still with us and still unthinkably dangerous

With the ominous threat of climate catastrophe clouding our future, it is easy to forget that the use of nuclear weapons could bring about immediate destruction on an unimaginable scale. The current ‘casual’ discussion of the possible use of tactical nuclear weapons in Ukraine brings home the reality of our risk. Dr Helen Caldicott is an iconic figure of the effort to abolish nuclear weapons. We speak with her about the issue and its relationship to the climate crisis.