'Extraordinary rendition' case is unkind (13)
I believe the answer is:
inconsiderate
'unkind' is the definition.
(I've seen this before)
'extraordinary rendition case' is the wordplay.
'extraordinary' indicates an anagram.
'rendition'+'case'='renditioncase'
'renditioncase' anagrammed gives 'INCONSIDERATE'.
'is' acts as a link.
(Other definitions for inconsiderate that I've seen before include "Thoughtlessly hurtful" , "Thoughtless, rash" , "Lacking regard for the feelings of others" , "Thoughtless of others" , "Without regard for the feelings of others" .)