Comeback from a Republican claiming “fake news” (6)
I believe the answer is:
answer
'comeback' is the definition.
(thesaurus)
'a republican claiming fake news' is the wordplay.
'republican' becomes 'r' (abbreviation).
'claiming' means one lot of letters goes inside another.
'fake' indicates anagramming the letters (I've seen this in other clues).
'a'+'r'='ar'
'news' is an anagram of 'nswe'.
'ar' going around 'nswe' is 'ANSWER'.
'from' is the link.
(Other definitions for answer that I've seen before include "Serve" , "See 9" , "Be satisfactory" , "Reaction to a question" , "What you need" .)