Peace treaty the eventual outbreak of the Second World War in 1939. The costly reparations that Germany was forced to pay the victors, the fact that Germany had to accept sole responsibility for starting the war, and the harsh restrictions on German rearmament were all listed in the treaty and caused massive resentment in Germany. Whether the Treaty of Versailles can be blamed for starting another war or not, it shows the difficulties involved in making peace. It might be noted that no such conflict resulted from the more punitive settlement with the Ottomans. Another famous example would be the series of
Romania during World War I in May 1918. On 10 November 1918, just one day before the German armistice and after all the other Central Powers had already capitulated, Romania re-entered the war after the successful Allied advances on the Macedonian Front. The Kingdom of Romania was ruled by kings of the House of Hohenzollern from 1866. In 1883, the King of Romania, Carol I of Hohenzollern, signed a secret treaty with the Triple Alliance that stipulated Romania's obligation to go to war only in the event that Austro-Hungarian Empire was attacked. While Carol wanted to enter World War I as an ally of the