It became an international boundary with the independence of both countries from Yugoslavia in 1991. Since Croatia's first multi-party elections in 1990, the Istrian regionalist party Istrian Democratic Assembly (IDS-DDI, Istarski demokratski sabor or Dieta democratica istriana) has consistently received a majority of the vote and maintained through the 1990s a position often contrary to the government in Zagreb, led by the then nationalistic party Croatian Democratic Union (HDZ, Hrvatska demokratska zajednica), with regards to decentralization in Croatia and certain facets of regional autonomy.
It became an international boundary with the independence of both countries from Yugoslavia in 1991. Since Croatia's first multi-party elections in 1990, the Istrian regionalist party Istrian Democratic Assembly (IDS-DDI, Istarski demokratski sabor or Dieta democratica istriana) has consistently received a majority of the vote and maintained through the 1990s a position often contrary to the government in Zagreb, led by the then nationalistic party Croatian Democratic Union (HDZ Hrvatska demokratska zajednica), with regards to decentralization in Croatia and certain facets of regional autonomy.