Approaches to conflict assessment remain stuck in the late 1990s. Methodological tools are overwhelmingly geared toward development actors. Significant policy evolution-driven by experiences in practice-over the last decade, along with progress in research on conflict and instability, powerfully suggests the need for analytical tools that are both truly joint-involving all relevant departments-and capable of embracing all major aspects of conflict causation and drivers of state fragility. Based on a review conducted for DFID and taking the UK as a case in point, this article outlines the key issues, challenges and requirements involved in operationalising genuinely joint analysis. There are positive signs that the UK government is serious about its commitment to integrated approaches in conflict-affected and fragile states, as demonstrated by development of the new Joint Analysis of Conflict and Stability (JACS). Crucially, this must be backed up by a shared understanding of the context that is theoretically informed, process savvy, empirically grounded and geared toward addressing the key issues identified in domestic and international policy.