"In spite of this tendency to introduce lack of uniformity in the Union, the different parts are coming far nearer to each other than they ever did under the centralized government of the Tsars. The reason is that they have common ideals and they are all working together in a common enterprise. Each Union Republic has in theory the right to separate from the Union whenever it wants to, but there is little chance of its doing so, because of the great advantages of federation of socialist republics in the face of the hostility of the capitalist world...