7 Times Philippine President Rodrigo Duterte Shocked the World

The Philippine President Rodrigo Duterte has been expressed regret Tuesday for referring to his American counterpart Barack Obama as a "son of a whore."

He made the controversial comment when asked by a reporter shortly before flying to Laos for a regional summit how he intended to explain to the U.S. President the thousands of extrajudicial killings of drug dealers since he took office on June 30.