Nations are vulnerable to one thing, their sanity. First of all, this AU is not canon. And in this AU...Sanity is equivalent to Unity, Peace and Harmony. Meaning...if there are riots...racism...people fighting....nations, specifically, federations and Unions might lose their sanity. Bit. By. Bit. Until they've become fully insane. How do they go insane? Well...from disunity. That builds an entity who will be forcing loss of sanity into the poor, nation. They'll lose themselves slowly. Until gone