Eleven ministers in the Democratic Republic of Congo have lost their jobs in a wide-ranging government reshuffle - including six already suspended on corruption charges.
President Kabila is currently in Kisangani
Those ministers were accused in November of serious financial malpractice, along with the heads of a number of state-owned companies.
The transitional government was set up in June 2003 to end a civil war and brought together former rebels and the political opposition.
The new defence minister is a major figure within the former Rwanda-backed rebel group the Congolese Rally for Democracy (RCD) Adolphe Onusumba.
The sacked ministers of defence and economy were RCD members who fell out with the party's leadership.
The announcement came as Congolese President Joseph Kabila visited the city of Kisangani in the troubled east of the country, to oversee the set-up of military headquarters there.
The region has seen repeated clashes between government forces and renegade RCD fighters.