This paper summarises research from four years of the DFID-funded and LSE-led Conflict Research Programme, which provides comparative research on the drivers of conflict and ‘what works’ to reduce violence in five of the world’s most affected countries: Syria, Iraq, Somalia, South Sudan and the DRC. The findings are relevant for other conflicts, for example, Afghanistan, Yemen or the Sahel. The paper is written to inform the UK Integrated Review and the creation of the Foreign, Commonwealth and Development Office. The paper argues that the UK can only reduce global conflict unilaterally by working with partners, including through the multilateral system. This requires a decade-long, joined-up strategic approach focused on reducing conflict ...