The index, which measures peace across 163 countries, is calculated by the Economist Intelligence Unit, and produced by the Institute for Economics and Peace, a global think tank
इंस्टिट्यूट फॉर इकोनॉमिक्स अँड पीस या आंतरराष्ट्रीय संस्थेने जगातल्या 163 देशांचा अभ्यास करून हा अहवाल तयार केलाय.