Italy emerged from the Paris Peace Conference of 1919 with the feeling that it had been denied its just rewards by ungrateful allies and that its victory was thus mutilated. Integrating this vengefulness into his diplomacy in the 1920s, Mussolini undertook a policy of selected treaty revision aimed at the breakup of the newly created state of Yugoslavia through covert operations. These stratagems proved futile. Ignoring the threat posed by Nazi Germany's...