The problems of the Horn of Africa are frequently interlinked and often cross international borders. The root causes of the conflicts include economic inequality, political marginalization, poor governance, ethnic tension, competition for scarce resources such as water and good land, periodic drought and poverty.
Contributory factors are porous borders, widespread availability of arms, corruption, a poor record by governments on human rights issues and interference in the region by organizations and countries outside the Horn. When you add the fact that the Horn is located on a religious fault line, you have a recipe for frequent conflict. It has arguably been the most conflicted corner of the world since the end of World War II. The Horn has constantly posed a serious challenge for U.S. policy.
Why did it seem early in the war that North Korea would win? ... It wanted to start a war with the United States. It wanted to receive economic aid from the United States. It was influenced by the Soviet Union.