“…The SDSR is our focus, rather than the NSS, because of the resource-induced trade-offs between competing capabilities that it entails and the associated political contestation. That said, Britain’s post-2008 turn to a ‘risk-based’ NSS, underpinned by the NSRA, is an important part of the context to our argument (Cornish and Dorman, 2013; Edmunds, 2012, 2014; Hammerstad and Boas, 2014; Porter, 2016; Blagden, 2018). Attempting to weigh likelihood against impact for the possible universe of adverse security contingencies represents the heart of the planning challenge for both the NSC and the SDSR, and the informal networks that enable/sustain them.…”