After attending the business forum meeting, Prime Minister Narendra Modi on Tuesday also attended the BRICS Leaders Retreat and deliberated on global developments with other leaders of the five-member bloc.PM Modi on Tuesday embarked on a four-day visit to South Africa and Greece and the 15th BRICS Summit in Johannesburg from August 22-24 is an integral part of his tour, which he is attending at the invitation of the country's President Matamela Cyril Ramaphosa.