Prof. Kagan, Donald, CLCV 205, Introduction to Ancient Greek History, Fall 2007, YALE Open Courses: Yale University, Classics (Accessed 23/09/2014), http://oyc.yale.edu/classics/clcv-205/lecture-18 License: Creative Commons BY-NC-SA Professor Kagan describes the aftermath of the Thirty Years Peace. He argues that the Peace had the potential to keep peace between Athens and Sparta due to the arbitration clause. In addition, he argues that during this time, Athens sends various diplomatic messages to the wider Greek world stating their intentions for peace. However, this peace is seriously challenged when Corinth and Corcyra come into conflict over Epidamnus. At this point, Athens could make an alliance with Corcyra and run the risk of angering Sparta or allow Corinth to potentially take over Corcyra's navy and change the naval balance of power. Athens decides on a defensive alliance.