Stand out around statesmen at summit as moral (4)
I believe the answer is:
just
'moral' is the definition.
(synonyms)
'stand out around statesmen at summit' is the wordplay.
'stand out' becomes 'jut' (to jut is to stand out or project).
'around' indicates putting letters inside.
'at summit' suggests taking the first letters (the top letter or 'summit').
The first letter of 'statesmen' is 's'.
'jut' placed around 's' is 'JUST'.
'as' acts as a link.
(Other definitions for just that I've seen before include "Book by Richmal Crompton" , "Quite" , "By a whisker" , "Merited" , "Barely; impartial" .)