Christine Ahn : Apparent breakthrough on N. Korean nukes comes at critical moment . Not only are more than 6 million North Koreans facing food shortages , but also the window is quickly closing for the United States to have any leverage over North Korea 's nuclear program , given the changing global balance of power . She says Obama administration sees regime not likely to collapse . Score: 6 Ahn : Still , North Korea needs U.S. to lift its sanctions and to formally end Korean War .
Christine Ahn : Apparent breakthrough on N. Korean nukes comes at critical moment . She says Obama administration sees regime not likely to collapse . Score: 6 Ahn : Still , North Korea needs U.S. to lift its sanctions and to formally end Korean War .