https://en.wikipedia.org/wiki/Global_Peace_Index

The Global Peace Index (GPI) is an attempt to measure the relative position of nations' and regions' peacefulness.
It is the product of the Institute for Economics and Peace (IEP) and developed in consultation with an international panel of peace experts from peace institutes and think tanks with data collected and collated by the Economist Intelligence Unit. The list was launched in May 2007 and updates have been made on an annual basis since then. It is claimed to be the first study to rank countries around the world according to their peacefulness. It ranks 162 countries, up from 121 in 2007. The study is the brainchild of Australian technology entrepreneur Steve Killelea, founder of Integrated Research, and is endorsed by individuals such as Kofi Annan, the Dalai Lama, archbishop Desmond Tutu, Finland's President Sauli Niinistö, Nobel laureate Muhammad Yunus, economist Jeffrey Sachs, former president of Ireland Mary Robinson, current Deputy Secretary-General of the United Nations Jan Eliasson and former US president Jimmy Carter.

The index gauges global peace using three broad themes: the level of safety and security in society, the extent of domestic and international conflict, and the degree of militarization. Factors are both internal such as levels of violence and crime within the country and external such as military expenditure and wars. The GPI has been criticised by Riane Eisler for not including indicators specifically relating to violence against women and children.

The updated index is released each year at events in London, Washington DC and at the United Nations Secretariat in New York. The GPI currently indicates Iceland, Denmark, Austria, Portugal, and New Zealand to be the most peaceful countries and Syria, Afghanistan, South Sudan, Central African Republic and Iraq to be the least peaceful.