Bangkok: in a way, largely Asian city (7)
I believe the answer is:
okinawa
'asian city' is the definition.
'bangkok in a way largely' is the wordplay.
'largely' indicates the answer is hidden within the clue.
'OKINAWA' is hidden within 'bangkok in a way'.
(Other definitions for okinawa that I've seen before include "Island of S. Japan" , "Japanese island, capital Naha" , "battle!" , "Japanese city" , "WW2 campaign" .)