The most common and most likely answer to this crossword clue is the 10 letter word ABSTENTION
I've seen this crossword clue in Financial Times
A
B
S
T
E
N
T
I
O
N
Buddy explains!

The straight part
We know that "Neutrality" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case neutrality = abstention.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ABSTENTION mean?
ABSTENTION noun- The act of restraining oneself.
- The act of abstaining; a holding aloof; refraining from.
- The act of declining to vote on a particular issue.
- Non-participation in the political world; as a country avoiding international affairs.