Aug. 23, 2007 - The Soviet Union was in its final days of existence when I visited Vietnam in late December of 1991. The cold war was about to end forever with the collapse of one of the two adversaries that had kept it going for 40-odd years. A lot had changed in Vietnam, too, I discovered during my trip. The coziness between Moscow and Hanoi, once comrades within the Soviet bloc, had curdled into mutual hatred. Throughout the country, but especially in the North, the Vietnamese had come to despise the large resident Russian population for its cheap spending...