It has long been recognized that peace agreements sometimes contain the seeds of their own destruction. Perhaps the most famous - though by no means only - example of this self-destructive tendency in the Versailles Peace Treaties that followed World War I. The harsh punitive terms of the settlement, which severed Prussia and demilitarized the Rhineland, helped pave the way for the rise of Adolph Hitler in the 1930s. However, even less exploitative settlements can also self-destruct because they fail to adequately anticipate new problems that may arise in the future. However, there are many additional reasons why peace agreements can fail or unravel. The parties to a settlement may simply conclude after a period of time that it is no longer in their self-interest to abide by the agreements they have negotiated. Without proper monitoring and enforcement mechanisms, agreements negotiated in good faith can still self-destruct in an escalating spiral of alleged violations and counter-recrimination, or what some analysts call "the security dilemma." Ambiguities in the text of an agreement may also become major points of contention that cannot be resolved through legal or procedural means. Clearly, there are many reasons why peace agreements fail.
Hampson, F.O. (2010). Peace Agreements. doi:10.1016/B978-012373985-8.00120-3