Between 1971 and 1974, the initial enthusiasm of the USSR for the Somali revolution was converted into a major commitment. Moscow, in the words of President Siad, became ‘Somalia's greatest helper’. In the economic sphere, Soviet technical and financial assistance covered more than twenty projects in the country. Altogether, Soviet economic assistance was valued at $100 million. This figure, when compared with that made available to other African states was, by Soviet standards, substantial. However, in the military field, the Soviet contribution was even more impressive. Estimates vary but even the most conservative suggest a ten-fold increase of Soviet military aid to Somalia during this period. By 1974, the Somali military inventory reportedly included large numbers of MiG fighter planes, T-54 tanks and a vast assortment of heavy arms. In return, the USSR obtained a major naval facility at Berbera and access to a number of Somali airfields. As a result of these arrangements, about 3,600 Soviet advisers, of whom roughly 1,400 were military personnel, had flocked into Somalia by 1974. Then, on 11 July 1974, the Soviet–Somali relationship reached a ‘qualitatively new and higher stage’ with the signing of a Treaty of Friendship and Co-operation.