The Soviet Union had concluded a US $100 million to US $150 million arms agreement with Sudan in August 1968 .
Which included T - 55 tanks , armored personnel carriers , and aircraft , the nation failed to deliver any equipment to Khartoum by May 1969 .
Although the Soviet Union had concluded a US $100 million to US $150 million arms agreement with Sudan in August 1968 , which included T - 55 tanks , armored personnel carriers , and aircraft , the nation failed to deliver any equipment to Khartoum by May 1969 .