South Korean President Moon Jae-in has called for a rapid resumption of talks with North Korea.
Both dialogue between his country and North Korea and between the US and North Korea must resume as soon as possible, Moon said on Tuesday at the United Nations General Assembly in New York.
"When the two Koreas and the surrounding countries work together, peace will be established," he said.
South Korea will always stand ready to meet North Korea in a "cooperative spirit," Moon added, but North Korea must adapt to the changes of a new "era of community".
Moon also repeated a call for a declaration to formally end the 1950-1953 Korean War.
"I once again urge the community of nations to mobilise its strengths for the end-of-war declaration on the Korean Peninsula," Moon said.
"I propose that three parties of the two Koreas and the US, or four parties of the two Koreas, the US and China come together and declare that the War on the Korean Peninsula is over," he said.
There has been renewed tensions and radio silence between the two countries recently following North Korean missile tests.
A thaw in relations took place in 2018 and there were direct talks between the two Koreas but progress then suddenly stalled.
US President Joe Biden has said his country is ready to meet North Korean officials "anywhere, anytime".
Australian Associated Press