World leaders have started arriving in South Africa ahead of the G20 leaders Summit taking place at the Nasrec Expo Centre in Johannesburg this weekend.  The summit starts tomorrow and ends on Sunday.  Leaders who have already arrived include UK Prime Minister Keir Starmer, China's premier, Li Qiang, Vietnam's counterpart Pham Minh Chính, and Australian Prime Minister Anthony Albanese.  Members from the world's largest economies are expected to consider key documents commissioned by South Africa. The Summit agenda will centre on three major sessions, inclusive and sustainable economic growth, building a resilient world, and a fair and just future for all. Sakina Kamwendo spoke to SABC News Politics Editor Mzwandile Mbeje