Claim there's strife (10)
I believe the answer is:
contention
This could be a double definition.
'claim' is the first definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe there's a link between them I don't understand?
'strife' is the second definition.
(thesaurus)
'there's' acts as a link.
Can you help me to learn more?
(Other definitions for contention that I've seen before include "Judgment" , "heated argument" .)