US President Donald Trump will meet with South Korean President Moon Jae-in in South Korea as part of his trip to the region in late June for the G20 summit in Japan, the White House said in a statement on Wednesday.

The two leaders "will continue their close coordination on efforts to achieve the final, fully verified denuclearization" of North Korea, the statement said. They will also discuss "ways to strengthen" the US-South Korea alliance.

It will be the second meeting between the pair since a summit between Trump and North Korean leader Kim Jong-un in Hanoi in February.

Moon, who has long backed engagement with North Korea, brokered the talks process between Trump and Kim, which led to their first landmark summit in Singapore last June.

A statement issued by the South's presidential office said the two leaders will discuss "establishing a lasting peace regime through the complete denuclearization of the Korean Peninsula."

When US Secretary of State Mike Pompeo visited Russia this week, Russian Foreign Minister Sergei Lavrov told him: "The leadership of DPRK [North Korea] expects certain guarantees of security of their country reciprocated by denuclearization, and that denuclearization should be expanded over the whole of the Korean Peninsula."