A party supporter wears earings designed in the names of Ghanaian President John Dramani Mahama during his inauguration at the Independence Square, Accra in January 7, 2013. Ghanaian President John Dramani Mahama has been sworn-in into office despite a court challenge by the main opposition New Patriotic party, citing alleged voting fraud resulting in the absence of party officials at the swearing-in ceremony attended by nine heads of state. AFP PHOTO/PIUS UTOMI EKPEI
John Dramani Mahama, Ghana's president, pauses during a session on the opening day of the World Economic Forum (WEF) in Davos, Switzerland, on Wednesday, Jan. 22, 2014. World leaders, influential executives, bankers and policy makers attend the 44th annual meeting of the World Economic Forum in Davos, the five day event runs from Jan. 22-25. Photographer: Chris Ratcliffe/Bloomberg via Getty Images
Ghanian President and ECOWAS Chairmen John Dramani Mahama speaks during a press conference after a meeting with Togo's President Faure Gnassingbe, opposition leader and presidential candidate Jean-Pierre Fabre, and Togolese Electoral Commission (CENI) members at the presidential palace in Lome on April 28, 2015. AFP PHOTO / ISSOUF SANOGO
German Chancellor Angela Merkel (L) and Ghana's President John Dramani Mahama smile as they review an honour guard during a welcoming ceremony at the chancellery in Berlin on January 19, 2015. AFP PHOTO / JOHN MACDOUGALL
Ghanaian President and ECOWAS chairman John Mahama arrives to attend the Summit of ECOWAS Heads of state and government in Abuja on December 15, 2014. Heads of states and government of ECOWAS are meeting in Abuja to discuss the on-going fight against the deadly Ebola virus disease that is ravaging the region, as well as the political and security situation in the region. AFP PHOTO/PIUS UTOMI EKPEI
John Dramani Mahama, president of Ghana, right, laughs during a panel discussion with Abdelilah Benkirane, prime minister of Morocco, at the U.S. Chamber of Commerce in Washington, D.C., U.S., on Monday, Aug. 4, 2014. The chamber and Investec Asset Management (IAM) are releasing a joint report today on the ways U.S.-Africa engagement can deepen and improve. Photographer: Drew Angerer/Bloomberg via Getty Images
President of the Republic of Ghana John Dramani Mahama addresses the 68th United Nations General Assembly at U.N. headquarters on September 26, 2013 in New York City. Over 120 prime ministers, presidents and monarchs are gathering this week for the annual meeting at the temporary General Assembly Hall at the U.N. headquarters while the General Assembly Building is closed for renovations.
John Dramani Mahama, president of Ghana, pauses during an interview in New York, U.S., on Sunday, Sept. 21, 2014. Mahama said a fiscal injection from the International Monetary Fund will be useful to bolster the economy, giving the first indication the government may seek a loan from the lender. Photographer: Victor J. Blue/Bloomberg via Getty Images