### Clue: It could give Nice altered tone potentially? (7,8)
### Answer: ENTENTE CORDIALE 
 ### Explanation: Definition: It could give Nice altered tone potentially
 **Anagram of**(It could give) NICE ALTERED TONE.
Answer: The "it" in the defn. In general, a friendly understanding between political powers. With capitals, the specific understanding reached between France and Britain in 1904 which settled outstanding colonial disputes, and which could put the town of Nice, France in a different light. Nice surface and a WIWD (wordplay intertwined with defn.) clue.