South Korean President Park Geun-hye on Tuesday called for North Korea to take a different approach.
China's Foreign Ministry on Tuesday called for North Korea to live up to its international commitments.
The news agency also said former U.S. President Jimmy Carter asked North Korea to pardon Jun.
And as Blumenthal notes, the US needs Beijing's help in convincing North Korea to give up its nuclear program.
In a separate statement, the leaders also called on North Korea to give up its nuclear weapons programmes.
At the same time, efforts by other countries to persuade North Korea to halt such activities have failed.
In recent years, former U.S. presidents have traveled to North Korea to secure the release of detained American citizens.
WSJ: North Korea Sentences U.S. Citizen to 15 Years Hard Labor
In recent years, former U.S. presidents have traveled to North Korea to secure the release of detained U.S. citizens.
WSJ: North Korea Sentences U.S. Citizen to 15 Years Hard Labor
UN's Commission on Human Rights called on North Korea to allow experts in to investigate these and other accusations.
Meanwhile, the United States, Russia and China have tried to persuade North Korea to enter peace negotiations with the South.
UN, or on keeping American troops in the Balkans or persuading North Korea to step away from the nuclear edge?
ECONOMIST: There��s a world waiting for America��s attention
The United States continues to closely monitor the North Korean nuclear program and calls upon North Korea to honor its international obligations.
One of those hotlines was used Monday to give hundreds of South Koreans approval to enter North Korea to go to work.
This would open the way for North Korea to join international organisations, such as the World Bank and the Asian Development Bank.
Secretary-General Kofi Annan has said he thinks the United States needs to open a direct dialogue with North Korea to ease the crisis.
For his part, UN Secretary-General Ban Ki-moon urged North Korea to "seriously" consider a dialogue with the South about the Kaesong Industrial Complex.
Mr DeTrani added that the US was handling the situation well and that it was up to North Korea to break the cycle.
Earlier, China's foreign minister promised Washington that Beijing would push North Korea to return to the talks, a senior U.S. State Department official said.
And in 1994, he traveled to North Korea to negotiate the release of an American helicopter pilot and the remains of his downed co-pilot.
He has worked tirelessly behind the scenes to keep the Middle East peace process on track, and successfully persuaded North Korea to open dialogue with South Korea.
Diplomats say the U.S. and North Korea's neighbors are pushing for North Korea to shut down its main nuclear reactor at Yongbyon and submit to international inspections.
Calling on North Korea to abandon its nuclear ambitions, she said that in a challenging security environment South Korea could not "afford to remain where we are".
They also said the U.S. hasn't committed to resuming formal negotiations with Pyongyang, but is waiting for North Korea to make good on carrying out its commitments.
Clinton's mission came as the United States and its allies in the region are seeking to persuade North Korea to return to nuclear disarmament talks, which have stalled.
The American administration wants agreement from North Korea to inspections by the International Atomic Energy Agency of sites where it is suspected of keeping material for nuclear weapons.
Most analysts don't expect North Korea to stage an attack on the U.S. or its allies and it isn't thought to have the missile technology to hit long-range targets.
But, while working to get concessions that will ease the harshness of the divide, it also needs to press North Korea to do things to break this dangerous cycle.
As you know, the United Nations Security Council passed two resolutions -- 1718 and 1874 -- that require North Korea to suspend all activities related to its ballistic missile programs.
Like Japan, Russia has also urged North Korea to give up its nuclear programme and indicated that it might support sanctions against the country if it failed to do so.
Kerry and the Chinese foreign policy chief, State Councilor Yang Jiechi, said the two nations would work together to create a nuclear-free Korean peninsula, effectively forcing North Korea to give up its arsenal.
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