The Global Peace Index (GPI) is an attemt to measure the relative position of nations and regions peacefulness.For 2014 and 2015, five out of the nine geographical regions experienced an improvement in peace and, among those that became less peaceful, substantial changes in the Index were only seen in two: sub-Saharan Africa and the Middle East and North Africa (MENA), which continues to suffer from the political aftermath of the Arab Spring.<...