AA asking about Japanese city (8)
I believe the answer is:
nagasaki
'japanese city' is the definition.
(I've seen this in another clue)
'aa asking about' is the wordplay.
'about' indicates an anagram.
'aa'+'asking'='aaasking'
'aaasking' anagrammed gives 'NAGASAKI'.
(Other definitions for nagasaki that I've seen before include "Japanese city suffering atomic bomb in WW2" , "Kyushu city" , "Japanese port bombed in WW 2" , "Japanese city where 2nd atomic bomb fell" , "Japanese port, setting for Madame Butterfly" .)