Nigeria Ethnic violence for control over the oil-producing Niger Delta region and inadequate infrastructures are some of the issues in the country. Umaru Yar'Adua of the People's Democratic Party (PDP) came into power in the general election of 2007. The international community has been observing Nigerian elections to encourage a free and fair process, and condemned this one as being severely flawed. Yar'Adua died on 5 May 2010. Dr. Goodluck Jonathan was sworn in as Yar'Adua's replacement on 6 May 2010, becoming Nigeria's 14th Head of State, while his vice-president, Namadi Sambo, an architect and former Kaduna State governor, was chosen
President of Nigeria group of northern army officers revolted against the government, killed General Johnson Aguiyi-Ironsi, and appointed the army chief of staff, General Yakubu Gowon as the head of the new military government. In 1975, General Yakubu Gowon was deposed and General Murtala Mohammed was the Head of the Federal Military Government of Nigeria until his assassination in 1976. In 1976, General Olusegun Obasanjo was made head of state in a meeting of the Supreme Military Council, keeping the chain of command established by Murtala Muhammed in place. In 1979, Nigeria adopted a federal presidential constitution, with provision for an executive President