During the 1950's, the US had adopted a policy of containment. The goal was to stop the spread of communism on a global scale. This included giving financial and military aid to countries who might fall into the hands of a communist government. A perfect example of this would be South Korea.
During the early 1950's, North Korea (a communist country) invaded South Korea. America, worried about the spread of communism, wanted to ensure that South Korea stayed free of this communist system. To do this, the US helped convince the United Nations to intervene in the conflict between North and South Korea.
The government of Sudan has been associated with sponsoring Janjaweed, an Arab militia that has been spreading terror especially in the Darfur region.
The Janjaweed has its origins in the long-running civil war that gripped one of Sudan's neighbors, Chad in 1980. The Sudanese government gave arms and ammunition to Arab - speaking Abbala nomads and enlisted them to act as an armed deterrent against Chadian incursions into Sudan during that time. This group together with another tribe from Chad's border later joined to form the basis of the Janjaweed
