 Complete the following phrase:  A military officer, he came to power after a military coup in 1969. Establishing a one-party state, with his Sudanese Socialist Union as the sole legal political entity in the country, Nimeiry pursued socialist and Pan-Arabist policies and close collaboration with Gamal Abdel Nasser of Egypt and Muammar Gaddafi of Libya. In 1971 Nimeiry survived a pro-Soviet coup attempt, after which he forged an alliance with Mao Zedong of China who provided him with significant military and economic assistance, and, eventually, with the United States as well. In 1972 he signed the Addis Ababa Agreement, ending the 