Agreement to put new tent in east twice (7)
I believe the answer is:
entente
'agreement' is the definition.
(I know that entente is a type of agreement)
'new tent in east twice' is the wordplay.
'east twice' means two substitutions for 'east'.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'in' indicates putting letters inside.
'east' becomes 'e' (synonyms).
'east' becomes 'e' (synonyms).
'n'+'tent'='ntent'
'e'+'e'='ee'
'ntent' put inside 'ee' is 'ENTENTE'.
'to put' is the link.
(Other definitions for entente that I've seen before include "International understanding" , "Friendly arrangement" , "Teen ten involved in friendly understanding between countries" , "Informal alliance" , "Diplomatic agreement" .)