It is common to consider nuclear doctrine as a fixed, unmoving and largely successful element of the Western Way of War. Dr Heather Williams talks to Peter Roberts about why this just isn't the case. The pair also debunk some myths about the nuclear domain including the myths surrounding the 'escalate to de-escalate' doctrine, allaying concerns about third party nuclear weapon proliferation. They also address the question of whether AI might bring stability to nuclear decision-making in the future.