Expansion of the BRICS group of nations is likely to be in focus at a summit in South Africa next week — as the bloc looks to challenge the West for geopolitical dominance. Leaders of Brazil, Russia, India, China and South Africa will be in physical attendance — with one notable exception. That's Russian President Vladimir Putin who faces an international arrest warrant over alleged war crimes in Ukraine — though he is expected to attend virtually. David Doyle of Reuters has more.