WASHINGTON — President Donald Trump and North Korea leader Kim Jong Un will meet this week in Vietnam for a second summit on denuclearization. In an interview Monday with VOA News Center Deputy Managing Editor David Jones, VOA’s Korean Service Chief Dong Hyuk Lee talked about the outcome of the 2018 summit and what can be expected from the meeting in Hanoi. Jones: Do you believe Kim Jong Un is serious about ever giving up his nuclear program? What do you think he wants in exchange? Lee: One thing is really important here: Kim Jong Un has never promised to unilaterally denuclearize his country. What he has promised to do is the denuclearization of the Korean Peninsula. Now, the U.S. maintains that the denuclearization of the peninsula, in essence, means the denuclearization of North Korea, because there are no nuclear weapons in South Korea. From the North Korean perspective, it’s a different story. North Korea believes that the denuclearization of the Korean Peninsula requires the removal of the U.S. nuclear umbrella, which has larger implications. So, the definition of denuclearization is critical. And so far, it is unclear whether both sides have an agreement on that definition. Jones: Do you…