Agreements causing worry between judges (8)
I believe the answer is:
treaties
'agreements' is the definition.
(treaty is a kind of agreement)
'worry between judges' is the wordplay.
'worry' becomes 'eat' (eating is a kind of worrying).
'between' indicates putting letters inside.
'judges' becomes 'tries' (trying is a kind of judging).
'eat' going within 'tries' is 'TREATIES'.
'causing' is the link.
(Other definitions for treaties that I've seen before include "Treatise about pacts" , "Written agreements between states" , "Accords" , "Rome and Versailles, for example" , "Treatise on international agreements" .)