Individuals have the right to form groups, but they do not have the right to form borders that extend outside of their own private property. If 10 people have homesteaded a plot of land, they can try their best to defend it. However, they do not have the right to extend the group beyond the members that have agreed to partake.

There is very little difference between nationalism and socialism. They both seek to uphold the interest of the group over the individual. Nazi Germany was an example of this, as well as Communist Russia.