▁Paul ▁Bi y og he ▁M ba ▁res igned ▁on ▁ 1 3 ▁February ▁ 2 0 1 2 . ▁President ▁Ali ▁B ongo ▁then ▁appointed ▁N d ong ▁S ima ▁as ▁Prime ▁Minister ▁on ▁ 2 7 ▁February ▁ 2 0 1 2 . ▁His ▁appointment ▁was ▁considered ▁not ew orth y ▁in ▁that ▁tradition ally ▁the ▁post ▁of ▁Prime ▁Minister ▁was ▁given ▁to ▁an ▁eth nic ▁F ang ▁from ▁Est ua ire ▁Province , ▁while ▁N d ong ▁S ima ▁was ▁from ▁W ole u - N tem ▁Province ▁in ▁the ▁north — although ▁he ▁was ▁also ▁a ▁F ang . ▁Prior ▁to ▁his ▁appointment , ▁N d ong ▁S ima ▁had ▁not ▁been ▁considered ▁a ▁particularly ▁important ▁figure ▁on ▁the ▁political ▁scene . ▁ ▁N d ong ▁S ima ▁served ▁as ▁Prime ▁Minister ▁for ▁nearly ▁two ▁years . ▁Following ▁local ▁elections ▁in ▁December ▁ 2 0 1 3 , ▁President ▁B ongo ▁appointed ▁Daniel ▁O na ▁O nd o ▁to ▁replace ▁N d ong ▁S ima ▁on ▁ 2 4 ▁January ▁ 2 0 1 4 . ▁O na ▁O nd o ▁took ▁office ▁at ▁a ▁hand over ▁ceremony ▁with ▁N d ong ▁S ima ▁on ▁ 2 7 ▁January . ▁ ▁In ▁July ▁ 2 0 1 5 , ▁N d ong ▁S ima ▁quit ▁the ▁P D G , ▁compla ining ▁that ▁the ▁party ▁was ▁not ▁open ▁to ▁criticism ▁and ▁different ▁points ▁of ▁view . ▁He ▁also ▁critic ized ▁the ▁government ' s ▁handling ▁of ▁fin ances ▁since