Unless a contract contains provisions concerning other agreements or acts, only the text of the treaty is legally binding. Generally speaking, a treaty amendment is binding only on States that have ratified the amendment and agreements reached at review conferences, summits or meetings of States parties are political, but not legally binding. The Charter of the United Nations is an example of a treaty that contains provisions relating to other binding agreements. By signing and ratifying the Charter, countries have agreed to be legally bound by resolutions adopted by UN bodies such as the General Assembly and the Security Council. Therefore, UN resolutions are legally binding on UN Member States and no signature or ratification is required.