According to the Global Peace Index created by the Economist Intelligence Unit, Norway is the most peaceful nation in the world and Iraq is the least. Among the 121 countries ranked, the United States came in 96th. Ireland was fourth.
The index was compiled based on 24 indicators measuring peace inside and outside of a country. They included the number of wars a country was involved in the past five years, how many soldiers were killed overseas and how much money was made in arms sales. Domestic indicators included the level of violent crimes, relations with neighboring countries and level of distrust in other citizens.