The coup removed political decision making from the control of the civilian politicians. Abbud created the Supreme Council of the Armed Forces to rule Sudan. This body contained officers affiliated with the Ansar and the Khatmiyyah. Abbud belonged to the Khatmiyyah, whereas Abd al Wahab was a member of the Ansar. Until Abd al Wahab's removal in March 1959, the Ansar were the stronger of the two groups in the government.

The regime benefited during its first year in office from successful marketing of the cotton crop. Abbud also profited from the settlement of the Nile waters dispute with Egypt and the improvement of relations between the two countries. Under the military regime, the influence of the Ansar and the Khatmiyyah lessened. The strongest religious leader, Abd ar Rahman al Mahdi, died in early 1959. His son and successor, the elder Sadiq al Mahdi, failed to enjoy the respect accorded his father. When Sadiq died two years later, Ansar religious and political leadership divided between his brother, Imam Al Hadi al Mahdi, and his son, the younger Sadiq al Mahdi.

Despite the Abbud regime's early successes, opposition elements remained powerful. In 1959 dissident military officers made three attempts to displace the Abbud government and to establish a "popular government." Although the courts sentenced the leaders of these attempted coups to life imprisonment, discontent in the military continued to hamper the government's performance. In particular, the Sudanese Communist Party (SCP), which supported the attempted coups, gained a reputation as an effective antigovernment organization. To compound its problems, the Abbud regime lacked dynamism and the ability to stabilize the country. Its failure to place capable civilian advisers in positions of authority, to launch a credible economic and social development program, and to gain the army's support created an atmosphere that encouraged political turbulence.

Abbud's southern policy proved to be his undoing. The government suppressed expressions of religious and cultural differences and bolstered attempts to arabize society. In February 1964, for example, Abbud ordered the mass explusion of foreign missionaries from the south. He then closed parliament to cut off outlets for southern complaints. Southern leaders had renewed in 1963 the armed struggle against the Sudanese government that had continued sporadically since 1955. The rebellion was spearheaded from 1963 by guerrilla forces known as the Anya Nya (the name of a poisonous concoction).

Data as of June 1991