text: 20. South Africa, of course, always has a pretext for its mischievous conduct. It is a master at concocting excuses for its actions and will insist on them no matter how ridicu- lous they may be to reasonable people everywhere. Now South Africa is seeking to convince the world that it invaded Angola in pursuit of freedom fighters of SWAP0 (South West Africa People’s Organisation). That, in the twisted logic of the South African regime, should impress the world and legitimize the act of aggression itself. 21. We know from the facts vrovided by Angola that totally unjust and extraneous issue, resolution 435 (1978) remains unimplemented to date. The refusal by South Africa to co-operate in the implementation of that resolu- tion, aimed at the peaceful transition of Namibia to inde- pendence, has left the Namibian people with no choice but to struggle by all means possible for the freedom and inde- pendence of its country. And by what right can South Africa, which is dedicated to the destabilization and even overthrow of the Government of Angola, demand the withdrawal of Cuban troops from that country? 24. Angola has put before the Council a convincing case. By coming to the Council, Angola has once again demon- strated that it is a peace-loving State and a faithful Member of the United Nations. Zambia, needless to say, fully supports all the demands of Angola articulated in the statement by my brother, Mr. Ellsio de Figueiredo. For its part, Zambia strongly and unreservedly condemns South Africa’s latest act of aggression against Angola. 25. For many years the Council has been discussing the problem of South Africa’s acts of aggression against Angola and other independent countries in the region. For many years the Council has been discussing the problem of South Africa’s continued illegal occupation of Namibia. 
analysis: The text appears to be a statement from a government representative, likely from Zambia or Angola, addressing the United Nations Security Council regarding the conflict between South Africa and Angola. The text focuses on the political situation, highlighting South Africa's alleged aggression and refusal to implement a UN resolution, and expressing support for Angola's demands. It does not mention economic development, natural resources, or other issues typically associated with the categories listed.