 There follows an updated situation report based on classified sources.In 1977, Jeremias Chitunda, UNITA's representative to the United States, convinced the U.S. to shift their support from the FNLA to UNITA following the MPLA's decisive defeat of the FNLA at the Battle of Quifangondo.Despite human rights concerns, Carter continued U.S. support for Joseph Mobutu of Zaire, who defeated Angolan-backed insurgents in conflicts known as Shaba I and Shaba II.