The Maputo Protocol is a treaty instrument that is binding on all countries that ratify it. It went into effect in November 2005, after the minimum 15 of the 53 African Union member countries ratified it. As of June 2007, according to the African Union, 43 nations had signed it and 21 had formally ratified it: (Benin, Burkina Faso, Cape Verde, Comoros, Djibouti, Gambia, Libya, Lesotho, Malawi, Mali, Mozambique, Mauritania, Namibia, Nigeria, Rwanda, South Africa, Senegal, Seychelles, Tanzania, Togo and Zambia). Those who ratify the treaty are called “States Parties.” Proponents of the Maputo Protocol present it as a method of combating female genital mutilation in Africa, where it is more common than elsewhere.