This is the thirteenth edition of the Global Peace Index (GPI), which ranks 163 independent states and territories according to their level of peacefulness. Produced by the Institute for Economics and Peace (IEP), the GPI is the world’s leading measure of global peacefulness. This report presents the most comprehensive data-driven analysis to date on peace, its economic value, trends, and how to develop peaceful societies. The GPI covers 99.7 per cent of the world’s population, using 23 qualitative and quantitative indicators from highly respected sources, and measures the state of peace using three thematic domains: the level of Societal Safety and Security; the extent of Ongoing Domestic and International Conflict; and the degree of Militarisation. In addition to presenting the findings from the 2019 GPI, this year’s report includes analysis of trends in Positive Peace: the attitudes, institutions, and structures that create and sustain peaceful societies. It looks at the relationship between the actual peace of a country, as measured by the GPI, and Positive Peace, and how a deficit of Positive Peace is often a predictor of future increases in violent conflict. It also looks at the dynamic relationship between changes in Positive Peace and changes in the economy.