How and why did japan and Italy defy the league of nations?

Japan and Italy defied the League of Nations primarily due to their imperial ambitions and dissatisfaction with the post-World War I order. Japan sought to expand its influence in East Asia and the Pacific, leading to the invasion of Manchuria in 1931, which the League condemned but failed to effectively respond to. Similarly, Italy, under Mussolini, aimed to build a new Roman Empire, leading to its invasion of Ethiopia in 1935. Both nations disregarded the League’s authority as they believed it could not enforce its decisions, ultimately undermining the League's effectiveness and credibility.