The United Nations Disability Inclusion Strategy establishes the first-ever framework for the United Nations system to advance disability inclusion across all pillars of the Organization's work, including the peace and security pillar, and to measure the progress made across the system. Evidence reported since the launch of the Strategy in 2019 demonstrates that the Strategy has provided a clear impetus among United Nations entities and peace operations working in the sector to address the rights of persons with disabilities, who are among the most marginalized in any crisis-affected community. However, the evidence also reveals that while humanitarian entities have made progress since the launch of the Strategy, disability inclusion remains an emerging area of work for peace operations in the field. The article argues that the Strategy's accountability framework has provided a much-needed blueprint and ability to monitor progress across the system, yet far more needs to be done to ensure that the United Nations system is equipped to respond to complex situations and reach the furthest behind first.