1、INSIGHTS PAPERSReducing Global Reliance on Nuclear DeterrenceLukasz Kulesa23 December 2025Long ReadTo reduce reliance on nuclear weapons,states must narrowtheir nuclear doctrines,utilise non-nuclear deterrencealternatives and engage in risk reduction.IntroductionThe 80th anniversary of the atomic bo
2、mbings of Hiroshima and Nagasaki in2025,and the awarding of the 2024 Nobel Peace Prize to Nihon Hidankyo thegrassroots movement of atomic bomb survivors of these two attacks as wellas increased tension between nuclear-armed states,have brought additionalattention to the question of whether there can
3、 be realistic pathways to reducereliance on nuclear weapons and pursue nuclear disarmament.This paper summarises the results of a project between RUSI and theHiroshima Organization for Global Peace(HOPe),and examines pathways forreducing the roles and functions of nuclear weapons.The main research q
4、uestion for this paper concerns the most realisticapproach to changing the policy of the possessors of nuclear weapons,aswell as the countries which rely on extended nuclear deterrence guarantees,including US allies in the Euro-Atlantic and Indo-Pacific regions.Whileconclusions regarding the potenti