Rubuta ci gaba don wannan sakin layi - Oba ya shiga cikin yakin basasa na Yuni-Oktoba 1997
a bangaren Sassou Nguesso kuma ya ji rauni a yakin. Bayan 'yan tawayen Cobra na Sassou Nguesso sun dawo da shi mulki a watan Oktoba na 1997, an nada Oba a matsayin Ministan Cikin Gida, Tsaro, da Gudanar da Yankin a ranar 2 ga Nuwamba, 1997. Shi ne kawai memba na gwamnati wanda bai tsaya a matsayin dan takara a zaben majalisa na Mayu-Yuni 2002 ba. Bayan zaben, a cikin gwamnatin da aka nada a ranar 18 ga Agusta 2002, an nada Oba a matsayin Ministan Tsaro da 'Yan Sanda.