North Korean leader Kim Jong Un and South Korean President Moon Jae-in are preparing to meet Tuesday in the North’s capital. It will be their third meeting since April. The talks are to last three days. The meeting comes a week after North and South Korea expanded military talks and opened a joint communications office near the border. Those are the most recent in a series of steps both sides have taken to reduce tensions. Observers say the talks this week are likely to build on the Panmunjom Declaration. The declaration is a set of goals the Korean leaders agreed to at their first meeting on April 27. Moon Chung-in is special advisor to the South Korean President for Unification, Foreign Affairs and National Security. On Thursday, Moon said the meeting would continue the ideas that resulted in the Panmunjom Declaration.