Ask again for change in Japanese city (8)
I believe the answer is:
nagasaki
'japanese city' is the definition.
(I've seen this in another clue)
'ask again for change' is the wordplay.
'for change' is an anagram indicator (I've seen this in other clues).
'ask'+'again'='askagain'
'askagain' is an anagram of 'NAGASAKI'.
'in' acts as a link.
(Other definitions for nagasaki that I've seen before include "Second Japanese city to be hit by an atomic bomb" , "Japanese city suffering atomic attack in WW2" , "City A-bombed 1945" , "Atomic bomb target, 9 August 1945" , "Japanese port, setting for Madame Butterfly" .)