Revolutionary chairman retaining union with parts of China (9)
I believe the answer is:
manchuria
'parts of china' is the definition.
The definition and answer can be both locations as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'revolutionary chairman retaining union' is the wordplay.
'revolutionary' indicates an anagram.
'retaining' means one lot of letters goes inside another (inserted letters are held or retained).
'union' becomes 'U' (common abbreviation as in Trades Union Congress).
'chairman' with letters rearranged gives 'manchria'.
'manchria' going around 'u' is 'MANCHURIA'.
'with' is the link.
Can you help me to learn more?
(Other definitions for manchuria that I've seen before include "Region of northeastern China" , "far eastern region" , "Region forming NE portion of China" .)