Proceedings of the 2nd day of an international conference entitled "The Art of Peace-making: Lessons Learned from Peace Treaties," organized in the context of the celebrations for the Tercentenary of Peace of Utrecht (1713-2013) and the Centenary of the Peace Palace (1913-2013), held September 19-20, 2013, the first day organized by the University of Utrecht and held in Utrecht and the 2nd day organized by the Carnegie Foundation and the University of Leiden and held at the Peace Palace in The Hague.