ostensibly to stop Process_end these raids Attack , but also to disrupt Hindering the growing alliance between the sadf and the national union for the total independence for angola ( unita ) , which the former was arming Hold with captured plan equipment , the soviet union backed the people 's armed forces of liberation of angola ( fapla ) through a large contingent of military advisers and up to four billion dollars ' worth of modern defence technology in the 1980s .

the incident Catastrophe took place in the aftermath of the soviet unk people 's armed Bearing_arms forces for the liberation of angola 's ( fapla ) operation `` 2 congresso do partido '' conducted Action against units of the national union for the total independence Change_of_leadership of angola ( unita , which received Receiving support Supporting from south africa ) .