“You must have watched on the TV, but based on what I experienced, Kim Jong Un is young, very candid and polite, treating the elders with respect,” Moon told an audience at the Council on Foreign Relations. “I believe that Kim Jong Un is sincere and he will abandon nuclear weapons in exchange of economic development.”

"Moon knows Kim has not yet met U.S. expectations and is worried about whether the U.S.-North Korea process can get started and stay on track," said Scott Snyder, a senior fellow for Korea Studies at the Council on Foreign Relations.