 Complete the following phrase:  On 29 February 1976, the Angolan President Agostinho Neto and Zairian President Mobuto Sese Seko met in Brazzaville to sign a non-aggression pact which was meant to see the end of Angolas support for Katangese rebels in their country while the Zairians promised to expel both the FNLA and UNITA from bases in Zaire but the deal did not hold and the 