(VOVworld)- US Secretary of State Rex Tillerson said the United States was looking at ways to bring pressure to bear on North Korea over its nuclear program. US Secretary of State Rex Tillerson- Photo: Getty He told the press on Thursday that these may include re-listing of Pyongyang in the blacklist of terror sponsor countries. U.S. Vice President Mike Pence, on a tour of Asian allies, has ruled out any negotiation possibilities with Pyongyang, saying that it must abandon its ballistic and nuclear weapon programs South Korea's acting president, Hwang Kyo-ahn, at a meeting with top officials on Thursday, repeatedly called for the military and security ministries to maintain vigilance and respond immediately to any provocation from the North Từ khóa: US North Korea State Secretary pressure vov vovworld Feedback Submit Xem thêm