The nature of civil war has evolved greatly from the beginning of the post-World War II era to today. This lecture looks into three important trends and briefly explains what is causing them. Data come from here: http://www.stanford.edu/group/ethnic/workingpapers/dur3.pdf I missed the Greek Civil War in the list of European civil wars before 1991. Turkey has also been involved in some civil wars, if you count Turkey as a part of Europe.