South Sudan has recalled its ambassador to the United States, after the Trump administration unilaterally imposed arms restrictions on the government last week. #160; First Vice President Taban Deng Gai said the U.S. move will negatively impact efforts to peacefully resolve the conflict in his country.#160; ?Garang Diing (Akuong) has been recalled to Juba.#160;They know the meaning diplomatically,? said Gai at the close of an event Sunday...