Love letters between the leaders won't end seven decades of war, and the sides are running out of time.
About 7,700 U.S. soldiers' remains have remained unaccounted for in North Korea since the Korean War armistice nearly 66 years ago.
The push for peace between the two countries is gathering steam.
"If both sides have the political willingness, it is reasonable for them to end the technical state of war on the peninsula first."
Once DNA sampling begins, the process could take six months to obtain the first results. A number of other obstacles will likely slow the process.
About 6,000 Americans were killed or went missing after an overwhelming Chinese offensive.
With continued denuclearization negotiations on the way, the stakes for South Korea's Moon Jae-in are high.
Around 5,300 U.S. military personnel are still in North Korea.
With no official peace treaty and a heavily fortified border between them, the Koreas are still very much living the Cold War.
The U.S. Forces Korea hold regular military drills with the South Korean army.
Kim Jong Un and Moon Jae-In looked triumphant as they shared a hug and signed the Panmunjom Declaration.
South Korean President Moon Jae-in and North Korean leader Kim Jong Un are scheduled to meet on April 27.
The soldiers' identities remain unknown.
North Korea claimed millions visited the captured USS Pueblo, which lies on the Pothong River at the Victorious Fatherland Liberation War Museum in Pyongyang.
After the world's deadliest conflict, a future secretary of state decided to split North and South Korea based on a map he found in a magazine.
North Korea has lashed out at U.S. regional allies South Korea and Japan for acting on Washington's behalf and undermining Kim Jong Un's nuclear ambitions.
One family is suing the U.S. government over its refusal to hand over files on a missing Korean War veteran who may have been taken to Russia.
By the time the war ended, nearly 1.8 million Americans fought in the conflict, nearly 37,000 soldiers died and more than 7,800 remain unaccounted for to this day.
"We want it to be the peace Games," the organizing committee chief said.
The colonel worked for the North Korean military's General Reconnaissance Bureau.