Keen on keeping West thus divided? (2,3)
I believe the answer is:
in two
'divided?' is the definition.
(I've seen this in another clue)
'keen on keeping west thus' is the wordplay.
I cannot really see how this works, but
'west' could be 'w' (abbreviation) and 'w' is found in the answer.
'keen' could be 'into' and 'into' is found in the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for in two that I've seen before include "Completely divided" , "Asunder" , "simply split" , "apart" , "divided up thus?" .)