There were easily three ways to justify an invasion into Albania, first and foremost one could find legitimate evidence tying the Religious and Ethnic militant groups causing violence and chaos across the Austro-Hungarian held Balkan territories to one or more of the Paramilitary organizations currently vying for power in the lawless principality.
But if such evidence did not exist, then one could easily go about forging it, bribing a few captured militants here or there to falsely confess to having ties to these Albanian factions. Thirdly, one could arrange a false flag attack.
This was a tactic that was most commonly used in the modern era to justify war by governments that did not otherwise have a valid casus belli. After all, in this modern era, civilized countries simply didn't invade their neighbors because they had the power to do so.
