What steps did South Africa as Chair of the Southern African Development Community (SADC) Organ on Politics, Defence and Security Co-operation from 2016 until August 2017 take after President Kabila and the Electoral Commission announced that the elections will no longer be held in 2017 and that President Kabila will stand for re-election on an election date to be determined contrary to the December 2016 agreement signed by the government of the Democratic Republic of Congo (DRC) led by President Joseph Kabila, the opposition parties led by the Union for Democracy and Social Progress and civil society organisations aimed at averting a slide into anarchy and civil war in the DRC, which requires President Kabila, whose term of office expired in December 2016 to step down after the elections that must take place before the end of 2017 and (b) did the Government of South Africa take any steps to quell the violence that erupted in the DRC immediately after the violation of this agreement, in order to ensure peace and stability in the region?