Harare Commonwealth Declaration was a declaration of the Commonwealth of Nations , setting out the Commonwealth 's core principles and values , detailing the Commonwealth 's membership criteria , and redefining and reinforcing its purpose . The Declaration was issued in Harare , Zimbabwe , on 20 October 1991 , during the twelfth Commonwealth Heads of Government Meeting . It reaffirmed the political principles laid out in the Singapore Declaration of twenty years before , and ( along with the Singapore Declaration ) is considered one of the two most important documents to the Commonwealth 's uncodified constitution
twelfth
Commonwealth Heads of Government Meeting 1991
Harare Declaration