You can bet that if outright combined arms conflict had suddenly erupted in the city various developed militaries of the world would have provided protection for their citizens to leave.  That&#x27;s visibly demonstrated by every civil war.  Give me an example of a developed military that&#x27;s gone into an armed conflict to rescue citizens.  The closest I can think of is the rescuing of hostages.  That&#x27;s not quite the same thing though and very rare.