Tuesday was just a warm-up before the big summit of the BRICS countries China, India, Russia, Brazil and host South Africa in Johannesburg. The summit’s goal is to give the group new momentum in its push to give itself and other countries of the Global South a greater say in global politics. A central concern of President Xi Jinping at the meeting with South Africa’s President Cyril Ramaphosa: The enlargement of the group to include new members.