KEY POINTS
  • Sung-Yoon Lee, an expert on the Koreas, says North Korea wants to draw out the negotiation process.
  • "North Korea is merely trying to increase, enhance its leverage in bargaining with the United States," he says.

North Korea may never end its nuclear weapons program, an expert on the Koreas told CNBC.

"Unless we come to a crisis point, North Korea will not change, it will not disarm," Sung-Yoon Lee, assistant professor at the Fletcher School of Law and Diplomacy at Tufts University, said Wednesday on "Power Lunch."