After the change of power in Washington, North Korea has not yet responded to offers of talks from the USA.
Joe Biden is patient - and continues to hope for a positive answer.
Seoul - In the dispute over the North Korean nuclear weapons program, the US is offering the largely isolated country talks without any preconditions.
Washington continues to hope that Pyongyang will respond positively to "our offer to meet us anywhere, anytime, without any preconditions," said US special envoy Sung Kim on Monday in South Korea's capital, Seoul.
There he conferred with the chief negotiators of South Korea and Japan, Noh Kyu Duk and Takehiro Funakoshi.
Since the change of power in Washington, Pyongyang has behaved in a wait-and-see manner.
US officials described the American approach under the current President Joe Biden as a "graduated practical approach" to find a negotiated solution.
Details have not yet been disclosed.
Negotiations between the two countries have not made any progress since a failed summit in Vietnam in 2019 - at that time with Donald Trump as US President.
North Korea's ruler Kim Jong Un said at a meeting of the ruling Labor Party last week that his government must be prepared for "dialogue and confrontation" with the US. In South Korea this was understood as a sign of readiness for dialogue - but also as an indirect call to create concrete incentives for negotiations.
Alluding to Kim Jong Uns ’statements, Biden’s North Korea representative said the US was also prepared for both. "Hopefully the reference to the dialogue by Chairman Kim indicates that we will soon get a positive answer." The USA continued to implement the sanctions decisions of the UN Security Council against North Korea. "We will also urge all UN member states, especially the members of the UN Security Council, to do the same to counter the threat posed by the People's Republic (North Korea) to the international community."