In status quo, talks about hostilities ending helped (8)
I believe the answer is:
assisted
'helped' is the definition.
(assisting is a kind of helping)
'in status quo talks about hostilities ending' is the wordplay.
'in' means one lot of letters goes inside another.
'status quo' becomes 'as is' (I've seen this in another clue).
'talks about' becomes 'ted' (I can't justify this - if you can you should give a lot more credence to this answer).
'ending' says to take the final letters (the ending of the word).
The last letter of 'hostilities' is 's'.
'asis'+'ted'='asisted'
'asisted' going around 's' is 'ASSISTED'.
Can you help me to learn more?
(Other definitions for assisted that I've seen before include "Aided" , "to small sibling involved in stormy dates" , "Lent a hand" , "Helped" , "given help" .)