Throughout the 1980s, the debate over nuclear weapons and nuclear deterrence was an incredibly bitter one for the Labour Party. This chapter seeks to ask whether the new traditionalists have defeated the unilateralists in the late 1980s and early 1990s as Labour’s defence commitments have dramatically altered once more. For the unilateralists, the Labour leadership of the past had colluded with the Tories to produce a security policy for Britain which had actually undermined British and international security; further, that policy was also immoral. Labour fought the 1983 election on a radical manifesto which called for a non-nuclear defence policy for the United Kingdom within the lifetime of the forthcoming Parliament. The Labour leadership spent the period prior to the election ‘clarifying’ its defence policy, partly in order to avoid the mistakes of the 1983 election campaign.