Nimeiry, Muhammad Gaafur al- (mOOhäm'mäd gäfoor'äl-nimer'ē) [key], 1930–, Sudanese army officer and politician. Early active in the Sudanese nationalist movement, he was temporarily expelled from high school (1948) after leading a student strike against British rule. He attended military college and served in the army, where he rose to the rank of colonel. In 1969 he led a group of leftist army officers in a coup against the civilian government of Muhammad Ahmad Mahgoub. Nimeiry established himself as president and later (1972) as prime minister. In 1972, Nimeiry signed a truce with secessionist forces in S Sudan, thus ending some 17 years of civil war. Although twice reelected, his popularity waned as he supported Egyptian President Sadat's efforts for peace with Israel, opposed external alliances, and tried to impose strict Islamic law. In 1985, while abroad, he was deposed.