South Korean President Moon Jae-in characterized his North Korean counterpart Kim Jong Un as “very honest” and suggested vaccine diplomacy could jump-start talks with Pyongyang in an interview published on Wednesday.

North Korea could still be persuaded to come out for negotiations on its nuclear weapons and intercontinental ballistic missiles through a “cycle of denuclearization and sanctions relief,” Moon told TIME magazine in the interview, held on June 9.

“I know that I don’t have much time myself,” said Moon, whose presidential term will end early next year. “The peace we have right now is a very fragile one; it