Prime Minister Dr. Manmohan Singh today held discussions with the heads of the states of South Africa and Brazil. Official sources said that intensifying strategic cooperation remained the focus of talks with Brazilian President Dilma Vana Roussef and his South African Counter part Jacob Zuma. They held extensive discussions with Dr. Singh on the issues of mutual interest and international developments of common concern.Enhancing bilateral economic ties remained high on the agenda of talks with the South African President. Bilateral trade between the two countries has reached 15 billion US Dollars and 96 Indian firms are currently investing in that country. Several Indian banks are also moving in, with State Bank of India, ICICI Bank and Bank of Baroda already established. South Africa is making investments in the infrastructure sector in India. Close to 1.3 million Indians are living in South Africa.In his meeting with the Brazilian President Dilma Vana Roussef, the talks covered energy cooperation with the oil rich country. Earlier Dr. Singh had separate meetings with the Chinese President Hu Jintao and his Russian Counter part Drimitry Medvedev. In his meeting with the Chinese President the two leaders decided to resume high level defence exchanges and set up a mechanism to address irritants on the boarder in tune with the agreements reached earlier. During his meeting with the Russian president the two countries decided to look into the nuclear safety norms and enhance cooperation in the Hydro Carbon Sector.After the successful completion of his first leg of his visit to China, the Prime Minister is leaving for Astana capital of Kazakhstan tomorrow on a two day official. He is visiting the country at the invitation of President Nursultan Nazarbayev. It will be his first visit to Kazakhstan and second to central Asia region. Dr. Singh will have bilateral talks with Kazakhstan President Nursultan Nazarbayev and his counter part Karim Massimov in Astana on several issues including civil nuclear cooperation, Agriculture and enhancement in trade.AIR correspondent covering the Prime Ministers visit reports, about six pacts are likely to be signed during the visit of Prime Minister Dr. Singh and a joint statement will issued at the end of the visit. Hosts of issues will be discussed between meetings of top leadership of both the countries.