Point of contention (5)
I believe the answer is:
issue
'point of contention' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for issue that I've seen before include "Debate topic; flow out" , "One of a series published periodically" , "Copy of a magazine, for instance" , "Pour forth" , "something to discuss" .)