Unfortunately, there is no connection between what was happening in the international arena in regard to the problem of southern Sudan. As you can recall, the problem of war in southern Sudan started in 1947. In 1955, that was the first guerrilla movement for the people of southern Sudan, actually, to confront the army in the north.
So there is totally no connection and there was no instigation from Ethiopia. Instead, Ethiopia was one of the first countries that accepted the refugees from southern Sudan.