Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. As North Korea's Deadline Approaches, South Pushes US for Progress William Gallo SEOUL - A senior adviser to South Korea's president expressed a broad range of frustrations at U.S. policy toward North Korea, saying Washington has not adequately empowered Seoul to play a mediating role with Pyongyang. In an interview with VOA, Jeong Se-Hyun, who advises South Korean President Moon Jae-in on unification issues, also said the U.S. should offer more incentives to persuade North Korea to give up its nuclear weapons. "Don't act as if you're offering a carrot while really you are using a stick," said Jeong. "North Korea must first be given carrots. Then if that doesn't work, you use a whip." Jeong's comments come just ahead of North Korea's end-of-year deadline for the U.S. to offer more concessions in nuclear talks. The North has threatened to resume long-range missile or nuclear tests -- steps which could upend two years of diplomacy. A return to major tensions on the Korean peninsula would be a political gut punch for President Moon, who has made outreach to North Korea a signature policy goal. Amid the breakdown in talks, North Korea has lashed out at its neighbor to the south, calling it a "meddlesome mediator" and refusing to participate in inter-Korean projects. "The problem is not that North Korea rejects the South Korean government's mediator role," Jeong said, "but that the U.S. must empower the South Korean government to promote it. Only then can the U.S. president achieve his political objectives." Jeong is a former South Korean unification minister and current executive vice chair of the National Unification Advisory Council-- a position equivalent to that of a Cabinet-level minister. His direct criticism of U.S. policy is a departure from the comments of most South Korean officials, who publicly insist the U.S.-South Korean approach to Pyongyang remains unified. However, South Korean officials have for months privately complained about the slow pace of the nuclear talks, saying the U.S. refusal to relax sanctions has prevented Seoul from implementing inter-Korean agreements reached in 2018. Policy failing? .