قطاع أوزو
At the beginning of 1986, the GUNT was increasingly isolated internationally and disintegrating internally. In reaction to this decline of his client, which legitimized the Libyan presence in Chad, Gaddafi encouraged the rebels to attack the FANT outpost of Kouba Olanga across the Red Line on February 18, with the support of Libyan armour. This brought the French return to Chad in Operation Epervier, restoring the Red Line. A few months later and to the surprise of no one, the GUNT rebelled against its former Libyan patrons, opening the way for the Toyota War in 1987 which expelled the Libyans from all Chad except the Aouzou Strip. The Aouzou Strip was finally restored to Chad in 1994.