declaration · noun C /ˌdek.ləˈreɪ.ʃən/
declaration
C1 a statement, often one that is written and official
Dictionary examples:
a declaration of independence/war
a customs declaration
Learner example:
The Spanish government has not been an exception and has tried to control pollution. Apart from taking part in world conferences and joining K[yo]to's declaration, it has also take[n] some measures. (Certificate in Advanced English; C1; Spanish)