SEOUL - South Korean President Moon Jae-un and North Korean leader Kim Jong-un ended talks on the first day of a third summit of the "enemy brothers" held in Pyongyang, as the crowds greeted the procession with flags and symbols of unification.

Moon, who has walked the streets of Pyongyang with the North Korean leader, hopes to move the stalled talks between North Korea and the United States over nuclear disarmament.

On Tuesday, he began his three-day visit to Pyongyang. He was greeted at the airport by the North Korean leader.

The two men, who were accompanied by their wives, hugged each other before exchanging a few words, while hundreds of people waved flags of the north and others raised the symbols of unification.

Thousands of people on both sides of the road lined up in Pyongyang holding bouquets of flowers, chanting "to unite the country" as Kim and Moon set out in an open car across from Komsosan Palace where Kim's father and grandfather were buried.

"I am very aware of the weight we carry," Moon told Kim at the start of official two-hour talks at the ruling Labor Party headquarters, adding he felt "very responsible."

"The whole world is watching and I want to show the result of peace and prosperity to people around the world," Moon said.