This report examines some of the challenges for policymakers that may arise from the advancement and increasing application of AI. It draws together strands of thinking about the impact that AI may have on selected areas of international affairs – from military, human security and economic perspectives – over the next 10–15 years. The report sets out a broad framework to define and distinguish between the types of roles that artificial intelligence might play in policymaking and international affairs: these roles are identified as analytical, predictive and operational. In analytical roles, AI systems might allow fewer humans to make higher-level decisions, or to automate repetitive tasks such as monitoring sensors set up to ensure treaty compliance. In these roles, AI may well change – and in some ways it has already changed – the structures through which human decision-makers understand the world.