Dinesh Gunawardena was sworn in as the prime minister of Sri Lanka by President Ranil Wickremesinghe on Friday.Gunawardena took oaths in the capital Colombo in the presence of other senior legislators.Dinesh Gunawardena was sworn in as the prime minister of Sri Lanka by President Ranil Wickremesinghe on Friday.Gunawardena took oaths in the capital Colombo in the presence of other senior legislators.