The Brussels Development Briefing n. 57 on “Investing in smallholder agriculture for food security and nutrition” organised by CTA, the European Commission/EuropeAid and the ACP Secretariat was held on Wednesday 11th September 2019, 9h00-13h00 at the ACP Secretariat, Avenue Georges Henri 451, 1200 Brussels, Room C. The Briefing discussed smallholder agriculture and its key role in delivering food security/nutrition, and sustainable food systems, as recognised in SDG 2.