Donald Trump has said he is in agreement with Kim Jong-un over the North Korea dictator's opposition to US-South Korea war games and suggested the pair will soon have a fourth meeting.

Speaking to reporters before departing the White House for his golf club in New Jersey, the US president also praised a "beautiful letter" he received from Mr Kim amid increased tensions on the Korean peninsula.

North Korea has conducted a series of missile tests in recent weeks, which Mr Trump said were all short-range missiles.

"I got a very beautiful letter from Kim Jong-un yesterday hand delivered from ... and it was a very positive letter," Mr Trump said.

"I'll think we'll have another meeting. He really wrote a beautiful three-page, I mean right from top to bottom, a really beautiful letter, and maybe I'll release the results of the letter, but it was very positive."

Korea Summit: Kim Jong-un crosses border for historic meeting Show all 25 1 /25 Korea Summit: Kim Jong-un crosses border for historic meeting Korea Summit: Kim Jong-un crosses border for historic meeting North Korean leader Kim Jong-un and South Korean President Moon Jae-in raise their hands after signing on a joint statement Korea Summit Press Pool via AP Korea Summit: Kim Jong-un crosses border for historic meeting Kim Jong-un heads towards Moon Jae-in to shake his hand between the military demarcation line, at the Joint Security Area on the Demilitarized Zone in the border village of Panmunjom in Paju EPA Korea Summit: Kim Jong-un crosses border for historic meeting South Korean President Moon Jae-in and North Korean leader Kim Jong-un hold hands as they cross the military demarcation line EPA Korea Summit: Kim Jong-un crosses border for historic meeting South Koreans react while watching a screen reporting the Inter Korean Summit Getty Korea Summit: Kim Jong-un crosses border for historic meeting South Korean President Moon Jae-in and North Korean leader Kim Jong-un chat as they arrive at the Peace House Reuters Korea Summit: Kim Jong-un crosses border for historic meeting North Korea’s leader Kim Jong-un was escorted by bodyguards from the North to the Military Demarcation Line that divides the two Koreas to meet with his South Korean counterpart at the truce village AFP/Getty Korea Summit: Kim Jong-un crosses border for historic meeting North Korean leader Kim Jong-un crosses the military demarcation line to meet with South Korean President Moon Jae-in AP Korea Summit: Kim Jong-un crosses border for historic meeting Kim Jong-un and Moon Jae-in shake hands Getty Korea Summit: Kim Jong-un crosses border for historic meeting North Korean leader Kim Jong-un and South Korean President Moon Jae-in shake hands after Kim crossing the military demarcation line Getty Korea Summit: Kim Jong-un crosses border for historic meeting South Korean President Moon Jae-in and North Korean leader Kim Jong-un at the Joint Security Area EPA Korea Summit: Kim Jong-un crosses border for historic meeting South Korean President Moon Jae-in and North Korean leader Kim Jong-Un speak with two South Korean children who presented Kim Jong-un with a bouquet of flowers EPA Korea Summit: Kim Jong-un crosses border for historic meeting Moon Jae-in Kim Jong-un pose for photographers at the Joint Security Area (JSA) EPA Korea Summit: Kim Jong-un crosses border for historic meeting North Korean leader Kim Jong-un signs the guest book as South Korean President Moon Jae-in looks on Getty Images Korea Summit: Kim Jong-un crosses border for historic meeting North Korean leader Kim Jong-un’s entry in the guestbook. The writing reads ‘A new history starts now. An age of peace, from the starting point of history’ Korea Summit Press Pool/Pool via Reuters Korea Summit: Kim Jong-un crosses border for historic meeting South Korean President Moon Jae-In and North Korean leader Kim Jong-un talk during their summit meeting at the Peace House EPA Korea Summit: Kim Jong-un crosses border for historic meeting North Korea's leader Kim Jong-un smiles AFP/Getty Korea Summit: Kim Jong-un crosses border for historic meeting North Korean leader Kim Jong-un poses with South Korean President Moon Jae-in for a photo inside the Peace House AP Korea Summit: Kim Jong-un crosses border for historic meeting North Korea’s leader Kim Jong-un talks with South Korea’s President Moon Jae-in AFP/Getty Korea Summit: Kim Jong-un crosses border for historic meeting North Korean leader Kim Jong-un and South Korean President Moon Jae-in prepare to plant a pine tree near the military demarcation line AP Korea Summit: Kim Jong-un crosses border for historic meeting South Korean President Moon Jae-in and North Korean leader Kim Jong-un applaud after planting a tree at the truce village Korea Summit Press Pool/Pool via Reuters Korea Summit: Kim Jong-un crosses border for historic meeting North Korea’s leader Kim Jong-un and South Korea’s President Moon Jae-in take a walk after they planted a tree AFP/Getty Korea Summit: Kim Jong-un crosses border for historic meeting North Korea’s leader Kim Jong-un talks with South Korea’s President Moon Jae-in at a bench on a bridge next to the military demarcation line at the truce village of Panmunjom AFP/Getty Korea Summit: Kim Jong-un crosses border for historic meeting North Korean leader Kim Jong-un and South Korean President Moon Jae-in sign on a joint statement Korea Broadcasting System via AP Korea Summit: Kim Jong-un crosses border for historic meeting North Korean leader Kim Jong-un and South Korean President Moon Jae-in embrace each other after signing on a joint statement Korea Summit Press Pool via AP Korea Summit: Kim Jong-un crosses border for historic meeting North Korean leader Kim Jong-un, left, and South Korean President Moon Jae-in shake hands after their joint announcement AP

Mr Trump and Mr Kim have met three times since last year to discuss ways to resolve a crisis over North Korea's nuclear and missile programmes, but progress has been scant on Washington's aim of getting the North Korea leader to give up his weapons.

Mr Trump said Mr Kim had said he was "not happy" about the missile tests, which the North Korean leader has said were a response to US-South Korean military drills being held this month. Mr Trump said he himself had "never been a fan" of the war games.

"You know why? I don't like paying for it. We should be reimbursed for it and I have told that to South Korea.

"But I said, 'do this,' because this is a big test; this was a turnover of various areas to South Korea. I like that, because that's what should happen."

US secretary of State Mike Pompeo said on Wednesday he was hopeful talks would resume in coming and that the US side was planning for negotiations in a couple of weeks.