Epidemics like SARS and Influenza often originate in impoverished regions that are all too common in failed states. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.418.3292&rep=rep1&type=pdf
Article 39 of the UN Charter states that infectious diseases may be considered as ‘threats to peace and security’. http://voelkerrechtsblog.org/infectious-diseases-as-a-new-threat-to-international-peace-and-security/
If a deadly disease like Smallpox or Spanish Flu reemerged in a nation like North Korea or Somalia, do the general principles of sovereignty of a nation still apply or does UN resolution 2177/2014 allow the World Court to use the UN and WHO to effectively usurp the nation's autonomy by enforcing medical treatments including quarantine?