(FILES) This file photo taken on August 10, 2016 in Lusaka shows Zambian Ruling party Patriotic Front presidential candidate and incumbent Zambian President Edward Lungu (C) dancing and gesturing before delivering a speech during his presidential campaign closing rally. Zambia's newly re-elected President Edgar Lungu faces an uphill battle to revive an economy reeling from a slump in copper prices, with a free-falling currency and widening budget deficit. / AFP PHOTO / GIANLUIGI GUERCIAGIANLUIGI GUERCIA/AFP/Getty Images