Finally, Italy's involvement in World War II as a member of the Axis powers required the establishment of a war economy. This put severe strain on the corporatist model, since the war quickly started going badly for Italy and it became difficult for the government to persuade business leaders to finance what they saw as a military disaster. The Allied invasion of Italy in 1943 caused the Italian political structure—and the economy—to rapidly collapse. The Allies, on the one hand, and the Germans on the other, took over the administration of the areas of Italy under their control. By the end of the war the Italian economy had been destroyed.