For a fifth year running, the United Nations General Assembly has failed to agree on reform of the Security Council -- the UN's most powerful decision-making body.

After nearly three days of debate, it managed only to agree a resolution stipulating that future changes should be approved by two-thirds of member-states.

In recent years there have been persistent calls for the expansion of the Security Council which currently has five permanent members and ten non-permanent ones.

Correspondents say that, while there's general agreement that the Council should be expanded, views differ on how many seats should be added, how they should be allocated, and what voting rights they should have.