City of Tory chaos (4)
I believe the answer is:
troy
'city' is the definition.
(Troy is an example)
'tory chaos' is the wordplay.
'chaos' indicates anagramming the letters.
'tory' anagrammed gives 'TROY'.
'of' acts as a link.
(Other definitions for troy that I've seen before include "City destroyed" , "City of Paris" , "Ancient city besieged by the Greeks" , "Besieged city which fell to Wooden Horse" , "Weight system - old city" .)