Read this passage from The Communist Manifesto by Karl Marx and Friedrich Engels:

> We have seen above, that the first step in the revolution by the working class, is to raise the proletariat to the position of ruling as to win the battle of democracy.
> The proletariat will use its political supremacy to wrest, by degrees, all capital from the bourgeoisie, to centralise all instruments of production in the hands of the State, i.e., of the proletariat organised as the ruling class; and to increase the total of productive forces as rapidly as possible.
> Of course, in the beginning, this cannot be effected except by means of despotic inroads on the rights of property, and on the conditions of bourgeois production; by means of measures, therefore, which appear economically insufficient and untenable, but which, in the course of the movement, outstrip themselves, necessitate further inroads upon the old social order, and are unavoidable as a means of entirely revolutionising the mode of production.

How has their prediction of communist revolutions played out in real-world events?

A. During the Vietnam War, the Soviet Union protected North Vietnam from an attack by South Vietnam.