The Nigerian military is charged with protecting the Federal Republic of Nigeria, promoting Nigeria's global security interests, and supporting peacekeeping efforts, especially in West Africa. This is in support of the doctrine sometimes called Pax Nigeriana. The Nigerian Military consists of an army, a navy, and an air force. The military in Nigeria has played a major role in the country's history since independence. Various juntas have seized control of the country and ruled it through most of its history. Its last period of military rule ended in 1999 following the sudden death of Sani Abacha in 1998. His successor, Abdulsalam Abubakar, handed over power to the democratically elected government of Olusegun Obasanjo the next year.