With regard to South Africa being expected to take over as Chair of the United Nations Security Council (UNSC) for the month of December 2020, what (a) issues has her department prioritised for the chairmanship of the UNSC and (b) linkages have been made by her department for South Africa, as current chair of the African Union (AU), to prioritise the AU theme of Silencing the Guns in Africa by 2020 for the Chairmanship?