Kammala jumlar da ke gaba: Lokacin da Denis Sassou Nguesso ya koma mulki a karshen
Yuni-Oktoba 1997 yakin basasa, ya nada Nguélé ga gwamnati a matsayin Ministan Minista na Urban Planning, Construction, da Gidaje, a wannan matsayi Nguélé ya yi aiki a karkashin Ministan Gwamnati na Sake Ginawa da Ci gaban Birane, Justin Lekoundzou. Daga baya an nada shi Minista-Wakilin Ministan Gyara Kasa a Ma'aikatar Gine-gine, Tsarin Birane, Gidaje, da Gyara Kasa a ranar 18 ga Agusta 2002. Convergence for Congo, ƙungiyar siyasa da Nguélé ke jagoranta, an kafa ta ne a 2003. Nguélé an daukaka shi zuwa mukamin Ministan Gyaran Kasa da Kula da Masarautar Jama'a a ranar 7 ga Janairu 2005.