End of fighting in Crimea: it’s ruined (9)
I believe the answer is:
armistice
'end of fighting' is the definition.
'armistice' can be an answer for 'end' (I have seen 'End of hostilities ' mean 'armistice' so perhaps 'end' could also mean 'armistice'). I'm unsure of the 'of fighting' bit.
'crimea it's ruined' is the wordplay.
'ruined' is an anagram indicator.
'crimea'+'its'='crimeaits'
'crimeaits' is an anagram of 'ARMISTICE'.
'in' is the link.
Can you help me to learn more?
(Other definitions for armistice that I've seen before include "let-up from war" , "Truce" , "End of hostilities" , "Suspension of hostilities" , "harbinger of peace?" .)