there is no war in Ba Sing Se

Etymology
A reference to , an American animated television series produced from 2005–2008, in which the corrupt officials of the city Ba Sing Se try to keep order by hypnotizing citizens to believe that "there is no war in Ba Sing Se" even as the city is being besieged.

Phrase

 * 1)  Nothing is going on; everything is under control; it is business as usual (suggesting that important information is being covered up).