SEOUL, April 30 (Reuters) - South Korean President Moon Jae-in said U.S. President Donald Trump should win a Nobel Peace Prize for his efforts to end the standoff with North Korea over its nuclear weapons program, a South Korean official said on Monday.

"President Trump should win the Nobel Peace Prize. What we need is only peace," Moon told a cabinet meeting, according to a presidential Blue House official who briefed media.

Moon and North Korean leader Kim Jong Un on Friday pledged to end hostilities between the two countries and work towards the “complete denuclearisation” of the Korean peninsula in the first inter-Korean summit in more than a decade.

Trump is preparing for his own summit with Kim in late May or early June.

That upcoming meeting was the main subject of a private walk and chat that Kim and Moon had during their meeting at the border, the official said.

In January, Moon said Trump "deserves big credit for bringing about the inter-Korean talks. It could be a resulting work of the U.S.-led sanctions and pressure." (Writing by Josh Smith; Editing by Nick Macfie)

23 PHOTOS Kim Jong Un and Moon Jae-In meet at DMZ See Gallery Kim Jong Un and Moon Jae-In meet at DMZ South Korean President Moon Jae-in and North Korean leader Kim Jong Un shake hands at the truce village of Panmunjom inside the demilitarized zone separating the two Koreas, South Korea, April 27, 2018. Korea Summit Press Pool/Pool via Reuters TPX IMAGES OF THE DAY South Korean President Moon Jae-in and North Korean leader Kim Jong Un attend a welcoming ceremony in the truce village of Panmunjom inside the demilitarized zone separating the two Koreas, South Korea, April 27, 2018. Korea Summit Press Pool/Pool via Reuters South Korean President Moon Jae-in and North Korean leader Kim Jong Un meet in the truce village of Panmunjom inside the demilitarized zone separating the two Koreas, South Korea, April 27, 2018. Korea Summit Press Pool/Pool via Reuters People watch a TV showing a live broadcast of the inter-Korean summit, at a railway station in Seoul, South Korea, April 27, 2018. REUTERS/Jorge Silva South Korean President Moon Jae-in and North Korean leader Kim Jong Un attend a welcoming ceremony in the truce village of Panmunjom inside the demilitarized zone separating the two Koreas, South Korea, April 27, 2018. Korea Summit Press Pool/Pool via Reuters South Korean President Moon Jae-in and North Korean leader Kim Jong Un meet in the truce village of Panmunjom inside the demilitarized zone separating the two Koreas, South Korea, April 27, 2018. Korea Summit Press Pool/Pool via Reuters People watch a TV showing a live broadcast of the inter-Korean summit, at a railway station in Seoul, South Korea, April 27, 2018. REUTERS/Jorge Silva People wave the Korean unification flag during the inter-Korean summit, near the demilitarized zone separating the two Koreas, in Paju, South Korea, April 27, 2018. REUTERS/Kim Hong-ji South Korean President Moon Jae-in and North Korean leader Kim Jong Un meet in the truce village of Panmunjom inside the demilitarized zone separating the two Koreas, South Korea, April 27, 2018. Korea Summit Press Pool/Pool via Reuters South Korean President Moon Jae-in and North Korean leader Kim Jong Un attend a welcoming ceremony in the truce village of Panmunjom inside the demilitarized zone separating the two Koreas, South Korea, April 27, 2018. Korea Summit Press Pool/Pool via Reuters Soldiers keep watch on the Grand Unification Bridge that leads to the Peace House, the venue for the Inter-Korean summit, near the demilitarized zone separating the two Koreas, in Paju, South Korea, April 27, 2018. REUTERS/Kim Hong-ji People hold the Korean unification flag as they watch a news report on the inter-Korean summit, near the demilitarized zone separating the two Koreas, in Paju, South Korea, April 27, 2018. REUTERS/Kim Hong-ji People watch a TV showing a live broadcast of the inter-Korean summit, at a railway station in Seoul, South Korea, April 27, 2018. REUTERS/Jorge Silva South Korean President Moon Jae-in and North Korean leader Kim Jong Un attend a welcoming ceremony in the truce village of Panmunjom inside the demilitarized zone separating the two Koreas, South Korea, April 27, 2018. Korea Summit Press Pool/Pool via Reuters People watch a television news screen showing live footage of the inter-Korean summit between South Korea's President Moon Jae-in (on screen L) and North Korea's leader Kim Jong Un (on screen R) at a railway station in Seoul on April 27, 2018. - North Korean leader Kim Jong Un and the South's President Moon Jae-in shook hands on April 27 over the Military Demarcation Line that divides their countries in a gesture laden with symbolism ahead of a historic summit. (Photo by Jung Yeon-je / AFP) (Photo credit should read JUNG YEON-JE/AFP/Getty Images) Vehicles carrying South Korean president Moon Jae-in approach a military check point on the Unification Bridge, linked to North Korea, near the demilitarized zone (DMZ) in Paju, South Korea, on Friday, April 27, 2018. Kim Jong Unï¿½on Friday became the first North Korean leader to enter South Korea since the peninsula was divided almost seven decades ago as talks begin over dismantling his nuclear weapons program. Photographer: SeongJoon Cho/Bloomberg via Getty Images Vehicles carrying South Korean president Moon Jae-in pass a military check point on the Unification Bridge, linked to North Korea, near the demilitarized zone (DMZ) in Paju, South Korea, on Friday, April 27, 2018. Kim Jong Unï¿½on Friday became the first North Korean leader to enter South Korea since the peninsula was divided almost seven decades ago as talks begin over dismantling his nuclear weapons program. Photographer: SeongJoon Cho/Bloomberg via Getty Images South Korean President Moon Jae-in (C) is greeted by his supporters as he leaves for the truce village of Panmunjom, near the presidential Blue House in Seoul on April 27, 2018 ahead of the inter-Korea summit. - North Korea's leader Kim Jong Un and the South's president Moon Jae-in will meet at the Military Demarcation Line that divides the peninsula before their summit on March 27, Seoul said, in an occasion laden with symbolism. (Photo by Jung Yeon-je / various sources / AFP) (Photo credit should read JUNG YEON-JE/AFP/Getty Images) South Korean President Moon Jae-in (C) is greeted by his supporters as he leaves for the truce village of Panmunjom, near the presidential Blue House in Seoul on April 27, 2018 ahead of the inter-Korea summit. - North Korea's leader Kim Jong Un and the South's president Moon Jae-in will meet at the Military Demarcation Line that divides the peninsula before their summit on March 27, Seoul said, in an occasion laden with symbolism. (Photo by Jung Yeon-je / various sources / AFP) (Photo credit should read JUNG YEON-JE/AFP/Getty Images) The motorcade carrying South Korean President Moon Jae-in passes through Seoul as he heads to a summit with North Korean leader Kim Jong Un on April 27, 2018. - North Korea's leader Kim Jong Un and the South's president Moon Jae-in will meet at the Military Demarcation Line that divides the peninsula before their summit on March 27, Seoul said, in an occasion laden with symbolism. (Photo by GREG BAKER / AFP) (Photo credit should read GREG BAKER/AFP/Getty Images) South Korean President Moon Jae-in (C) is greeted by his supporters as he leaves for the truce village of Panmunjom, near the presidential Blue House in Seoul on April 27, 2018 ahead of the inter-Korea summit. - North Korea's leader Kim Jong Un and the South's president Moon Jae-in will meet at the Military Demarcation Line that divides the peninsula before their summit on March 27, Seoul said, in an occasion laden with symbolism. (Photo by Jung Yeon-je / various sources / AFP) (Photo credit should read JUNG YEON-JE/AFP/Getty Images) South Korean President Moon Jae-in and North Korean leader Kim Jong Un meet in the truce village of Panmunjom inside the demilitarized zone separating the two Koreas, South Korea, April 27, 2018. Korea Summit Press Pool/Pool via Reuters South Korean President Moon Jae-in and North Korean leader Kim Jong Un meet in the truce village of Panmunjom inside the demilitarized zone separating the two Koreas, South Korea, April 27, 2018. Korea Summit Press Pool/Pool via Reuters TPX IMAGES OF THE DAY Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

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