High Quality Content by WIKIPEDIA articles! The Global Peace Index (GPI) is an attempt to measure the relative position of nations' and regions' peacefulness. It is the product of 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 first in May 2007, then continued yearly. It is claimed to be the first study to rank countries around the world according to their peacefulness. It ranks 158 countries (up from 121 in 2007). The study is the brainchild of Australian entrepreneur Steve Killelea and is endorsed by individuals such as Kofi Annan, the Dalai Lama, archbishop Desmond Tutu, former Finnish President Martti Ahtisaari, Nobel laureate Muhammad Yunus, economist Jeffrey Sachs, former president of Ireland Mary Robinson, and former US president Jimmy Carter. Factors examined by the authors include...