New Delhi, Sept. 28 -- Congress leader Rahul Gandhi has left for South America where he will visit four countries and meet students, political leaders and business community, party's media department head Pawan Khera said on Saturday. "Leader of the Opposition in Lok Sabha, Rahul Gandhi, has embarked on a visit to South America. He is scheduled to engage with political leaders, university students, and members of the business community across four countries," Khera announced. According to party functionaries, Gandhi boarded his flight on Friday night and is expected to spend at least a week abroad. He will visit Brazil, Columbia, Peru and Chile, the functionaries said. Reacting to the development, BJP spokesperson Sudhanshu Trivedi said: "I...