(noun) a political principle or policy directed toward the incorporation of irredentas within the boundaries of their historically or ethnically related political unit / a person advocating the restoration to their country of any territory formerly belonging to it
So once again the old crazy drums of irredentist territorial claims and ethnic autonomy are pounding in the jungle of the cities.
Around the great conception of the Balkan Federation there swarmed hordes of secret agents, impresarios of irredentism