But self determination does not seem like nationalism. Nationalism is defensible with Hegel. But self determination is incoherent. What is the group? This was noticed right away when Wilson proposed self determination as a principle. It automatically leads to conflict. However nationalism is perfectly legitimate and can be defended by Hegel. [But then you would have to defend Hegel, which I think is possible and even desirable. ]
I believe the point was raised right away after Wilson stated this principle. Self Determination has not lower limit, and no upper limit. It is a simply a principle that gives a way for people to make trouble when they don't like the way things are going. Serbia is one good example. Nationalism however is something that is defended by Hegel. So one would have to see exactly what kind of nationalism he is defending and why. Certainly he is not saying self determination for everyone. He means a kind of nationalism that has associated with it an upward vector. It is not stationary.