The Pentagon said: "North Korea" provocation suspended Tuesday, but this did not prevent the United States and South Korea to North Korea's militant united front and the growing nuclear threat.
It is just possible, however, tough target of solidarity - President Obama at the White House on Tuesday to meet South Korean President Park Geun-hye - to pave the way for the road is a new dialogue between the two Koreas sometime.
Obama said in a White House news conference, Pyongyang has "failed" and the recent nuclear provocation the United States and South Korea - two countries Memorial Park 'President's visit to China 60 years of separatist alliance - the North can no longer scare the region and the world into its requirements bow.
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"Days when North Korea to create a crisis and lead to concessions, those days are over," Obama said.
For her, before the departure of the park with her president's first visit to set the tone vowed to quickly respond to any North Korean attack and more than commensurate military.
Park, just two weeks after he took office in February, North Korea's third nuclear test, but also made it very clear that she saw her toughness trust as "power politics" that will allow re part of the dialogue with the DPRK.
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However, a key factor toward the north, and her practice is her ability to show a solid alliance, regional experts say - a factor to explain the tone of the Park Obama summit on Tuesday.
Part of the park's "trust in the power politics" is to persuade the United States, it can be trusted to her appointment with Pyongyang when (if) there.
"The summit is what really establish a good relationship," former National Security Council director of Asian affairs, South Korea is now the chairman of the Washington Center for Strategic and International Studies (CSIS), said Victor Cha Mou.
Even before the reach the park, the White House stressed that the two allies of North Korea and the world united in their approach to North Korea's provocative.
"In dealing with North Korea, which is critical, we are united," said Daniel Russel, Obama's senior director of Asian affairs, on Monday. He said it is still too early to tell if Pyongyang really back to its provocative actions, or just "twists and turns".
He said the United States and South Korea agreed with North Korea's policy is "incremental contact, but it can only move forward if North Korea is specific and permanent steps to dismantle its nuclear program.
The United States and South Korea Korean Won difficult part of the "outward show of unity, some regional experts say." Tougher behind the scenes "discussion will be how to balance the two-track system DPRK to keep up the pressure, plus keep an open dialogue, said:" A former senior in charge of Michael Green, the National Security Council of Asia and Asian Centre for Strategic and International Studies, senior vice president. "There really is no perfect solution. "
A key issue for a unified approach to the North is the possibility of Pyongyang's growing less and less interested provoke the world looking for concessions, increasingly established itself as a nuclear power.
Korea's nuclear and missile tests "are not statements," Mr. Green said, "but they are technical test", designed to strengthen North Korea's nuclear progress. The consent of his colleagues, Mr Cha. "The main driving force is the development of weapons," he said.
However, Green said, he believes that in South Korea and North Korea "take the lead" The advantage now. Among them, he said, it would "strengthen, South Korea is a puppet of the United States," the North Korean regime is often advocated.
Park and Obama's visit aims to show the relationship between the two countries is much more than just North Korea. Asia's economic vitality and year-old US-South Korea Free Trade Agreement must be stressed that the park held a huge dinner in Washington on Tuesday night, and then to solve the joint session of Congress on Wednesday.
US-South Korea FTA, but probably will not get the expected unanimous applause Park. Trade agreements, critics say, the early implementation of fact has led to a decline in U.S. exports to South Korea, although other trade experts say, the year barely enough time to judge the agreement.
With the United States is currently negotiating a broader United States - Asia trade agreement, the Trans-Pacific Partnership, critics say, it is not too early to worry about, a US-South Korean Accord humble launch may be a bad sign for a larger Pacific Rim trade agreements.
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