Secretary of State Hillary Clinton to visit Angola on Sunday . `` She will underline America 's commitment to partner with governments , the private sector , nongovernmental organizations and private citizens to build societies where each individual can realize their potential . '' African country is major source of petroleum , especially natural gas to world market . Clinton to visit 14 African nations in 11 days .
Secretary of State Hillary Clinton to visit Angola on Sunday . African country is major source of petroleum , especially natural gas to world market . Clinton to visit 14 African nations in 11 days .