In the first week of February, the African Union (AU) will hold its annual heads of state summit ahead of its twenty-year anniversary in July. The meeting offers an opportunity for AU member states to assess the organisation’s achievements to date as the continent’s foremost peace and security body. It has been a turbulent year for Africa: tens of thousands killed in wars in the Horn of Africa, countries falling back under military rule, and struggles with faltering transitions and Islamist militancy. The AU’s institutions must be able to tackle these problems, as well as climate change-related security threats. The AU should redouble efforts to address crises in the Horn, the Sahel and Mozambique; chart a future for its Somalia mission; press for a successful transition in Chad; and put climate security on the global agenda. This briefing sets out eight priorities for the AU in the coming year.