On Friday, April 27, 2018, North Korean leader Kim Jong Un and South Korean president Moon Jae-in made history by promising to formally end the Korean War this year and rid the peninsula of all nuclear weapons by 2021. The Panmunjom Declaration for Peace, Prosperity, and Unification, hailed by Mr. Kim as a “new era of peace,” is the culmination of reconciliatory efforts between the two countries, which began in January at the request of the North Korean leader.