SEOUL (Reuters) - South Korean President Moon Jae-in said U.S. President Donald Trump deserves 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 meeting of senior secretaries, according to a presidential Blue House official who briefed media.

Moon and North Korean leader Kim Jong Un on Friday pledged at a summit to end hostilities between their countries and work toward the “complete denuclearization” of the Korean peninsula.

Trump is preparing for his own summit with Kim, which he said would take place in the next three to four weeks.

The Trump administration has led a global effort to impose ever stricter sanctions on North Korea and the U.S. president exchanged bellicose threats with Kim in the past year over North Korea’s development of nuclear missiles capable of reaching the United States.

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”.

Trump’s predecessor, Barack Obama, won the 2009 Nobel Peace Prize just months into his presidency, an award many thought was premature, given that he had little to show for his peace efforts beyond rhetoric.

Even Obama said he was surprised and by the time he collected the prize in Oslo at the end of that year, he had ordered the tripling of U.S. troops in Afghanistan.

As well as Obama, three U.S. presidents have won the Nobel Peace Prize: Theodore Roosevelt, Woodrow Wilson, and Jimmy Carter

Moon’s Nobel Prize comment came in response to a congratulatory message from Lee Hee-ho, the widow of late South Korean President Kim Dae-jung, in which she said Moon deserved to win the prize, the Blue House official said.

Moon responded by saying Trump should get it.

Trump on Monday suggested his planned meeting with Kim take place at the Peace House on the border between North and South Korea.

The upcoming Trump-Kim 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.

U.S. Secretary of State Mike Pompeo said on Sunday that Trump would maintain a “pressure campaign” of harsh sanctions on North Korea until Kim scraps his nuclear weapon program.