(Xinhua) -- Venezuelan President Hugo Chavez said on Friday he will stop oil exports to the United States, close television channels and expel journalists if the December 2 referendum victory he expects is disclaimed and violence starts in this country. "I swear to God and to my mother we are not going to allow it," Chavez said in his campaign speech in favor of "yes" to the constitutional reforms he promotes and pronounced before thousands of his followers meeting at the ample Bolivar avenue in downtown Caracas, Venezuela's capital city. Chavez repeated his accusation made in past days about "imperialist plans and their creole oligarchy servants," including the U.S.'s Central Intelligence Service, which were planning to create violence against Venezuela with what he called "Pincers Operation."