A proponent of the theory that Montenegrins were an ethnic group distinct from Serbs , he also founded .
A proponent of the theory that Montenegrins were an ethnic group distinct from Serbs , he also became the leader of the Montenegrin Federalist Party .
A proponent of the theory that Montenegrins were an ethnic group distinct from Serbs , he also founded and became the leader of the Montenegrin Federalist Party .