The last 20 years have seen a gradual decline in the number and severity of internal armed conflicts worldwide. This trend is partly due to widespread improvements in factors such as education levels, economic diversification, and demographic characteristics. These factors are projected to continue to improve for the remainder of this century. As a consequence, the world should continue to grow ever more peaceful.
Hegre, Håvard & Håvard Mokleiv Nygård (2014) Peace on Earth? The Future of Internal Armed Conflict, Conflict Trends, 1. Oslo: PRIO.