Moscow's Third World Strategy. By Alvin Z. Rubinstein. Princeton: Princeton University Press, 1988. 311p. $29.95. - Gorbachev's Military Policy in the Third World. By Mark N. Katz. Washington Paper no. 140. New York: Praeger, 1989. $33.95 cloth, $11.95 paper. - The Limits of Soviet Power in the Developing World. Edited by Edward A. Kolodziej and Roger E. Kanet. Baltimore: Johns Hopkins University Press, 1989. 531p. $47.50 cloth. - The Soviet Union and the Strategy of Non-Alignment in the Third World. By Roy Allison. New York: Cambridge University Press, 1988. 298p. $39.95.