The diplomatic war between the two sides reached its peak in the League of Nations in September 1935.

When the Ethiopian delegate submitted a draft resolution condemning Italy's aggressions and its violation of the League's Covenant; Italy responded with a lengthy memorandum in which it spoke of Ethiopia's threat to the security and safety of the neighboring countries of its Italian colonies, and that it was a constant enemy to Italy. The memorandum pointed out that Ethiopia was a disunited or unintegrated state and that the Amhara race was dominant over the rest of the enslaved Ethiopian peoples; Also, the central government in Addis Ababa was incapable of creating a certain degree of civilization and progress that every modern state participating in the League's membership should achieve.

The only ineffective objection came from the Soviet Union. Britain and France were very cautious about directing any criticism or accusation at Italy. The League formed a five-member committee to study the crisis and search for a peaceful solution. The committee included Britain, France, Poland, Spain, and Turkey. The committee submitted its report in mid-September, recommending that Ethiopia work to prevent slavery, control arms possession, protect European settlements, and maintain security in the border regions. The committee also recommended that Britain and France cede parts of their colonies in Somalia to Italy and grant Ethiopia access to the sea. While Ethiopia accepted the plan, Italy rejected it as well, launching a strong campaign against Eden, describing him as "the devil of the Abyssinian question."

By the end of September, Italy announced its withdrawal of all its commitments to the League of Nations and by the end of autumn, it began its military invasion. - The Military Invasion: (3) As soon as the crisis erupted, Italy worked to take advantage of the time in 1935 to achieve its goal of invading Ethiopia. Preparations for the invasion began by repairing the two ports in the region, Massawa and Mogadishu. The two ports were previously closer to small ship anchorages and had no significant equipment and lacked basic necessities like drinking water. Italy had also extended the railway line between Massawa and Asmara. For example, the port of Massawa could only accommodate five ships a day and had a discharge capacity of only ten tons a day, and there was no drinking water. The Italian navy worked to improve the port's discharge capacity from ten tons to 74.