's position is full self-determination, up to and including independence, for native nations, the internally colonized Black nation, and all island colonies (Puerto Rico, Hawaii, Guam, etc). So the splitting of territory is an acknowledged possibility and likely outcome - it would be surprising if not a single one of those hundreds of nations chose independence.
As far as breaking up the socialist replacement for the current settler state, I don't really see the point. Maybe it breaks apart in the course of the revolution, but it wouldn't be an objective.