Decline to enter a newly-written, amicable agreement (7,8)

I believe the answer is:
entente cordiale
'written amicable agreement' is the definition.
'entente cordiale' can be an answer for 'agreement' (entente cordiale is a kind of agreement). I am unsure of the 'written amicable' bit.
'decline to enter a newly' is the wordplay.
'newly' indicates anagramming the letters.
'decline'+'to'+'enter'+'a'='declinetoentera'
'declinetoentera' anagrammed gives 'ENTENTE CORDIALE'.
Can you help me to learn more?
(Other definitions for entente cordiale that I've seen before include "Understanding" , "Agreement" .)
