Answers are grounded in this paper and cite their sources.
(1978). Soviet use of proxies in the third world: The case of Yemen. Soviet Studies: Vol. 30, No. 1, pp. 87-106.
No takes yet. Share an insight, caveat, or question.
Richard E. Bissell (1978) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: