Open borders. If they were to create this union or join the EU it means its easier for albos to get into macedonia and montenegro. Plus the albos already living there are a protected minority which the EU once again ensures. All they have to do then is breed- and theyre above the relacement level and thus they have higher birth rates than Macedonians or Montenegrins who are substanially below it. Give it time 50-100 years and they will be a majority above 50 or even 66% and once that happens the land is theirs seeing as they can do with Macedonia and Montenegro as they please once they become the majority once again thanks to EU principles.