North Korea nuclear test: World leaders react

North Korea claims that there was no sign of leakage nuclear materials during the test and it also take no effect to the environment. Many countries have immediately expressed the disagreement, while requesting the United Nations Security Council (UNSC) to convene an emergency meeting to discuss about the latest nuclear test.

Reacting to the event, said at an emergency meeting in Vientiane (Laos), South Korean President Park Geun-hye has condemned the suspicious nuclear testing action by North Korea earlier, she also intensively emphasized that Pyongyang's actions will only lead to stronger sanctions following with further isolating situation.

Punggye-ri testing site of North Korea. Photo: EPA.

President Park Geun-hye also made a telephone conversation with US President Barack Obama on the move of North Korea. Sharing the same perspective, National Security Advisor of South Korea Cho Tae-yong confirmed that North Korea has already conducted the 5th nuclear test.

In a statement, Mr. Cho Tae-yong mentions clearly "Pyongyang still hold several dangerous provocations and while only focusing on developing nuclear weapons and missiles. North Korean need to realize that they will not gain anything from such efforts".

National Security Adviser of South Korean affirmed that Seoul strongly warned North Korea to immediately abandon its nuclear program and missile in a clear, entire and irreversible way. The official added that North Korea will have to face additional sanctions by the international community as well as the isolating situation.

Meanwhile, Japanese Prime Minister said that such nuclear test is "intolerable". When answering questions from reporters, Japanese Foreign Minister Fumio Kishida said that Japan has established a specialized team to follow the latest developments related to the incident. Tokyo has dispatched three T-4 aircrafts to test whether the radiation has happened or not since the seismic event.

Speaking at a press conference in Tokyo on the same day, Japan Defense Minister Tomomi Inada said that North Korea had conducted a nuclear test, along with the significant achievements in mobility ballistic missile technology has raised serious threat to Japan.

He said: "We cannot deny the possibility that North Korea is minimizing a device to develop a warhead." Chief Cabinet Secretary Yoshihide Suga stated Japan will consider to implement unilateral sanctions against North Korea after Pyongyang carried out what South Korea described as nuclear test.

On the same day, Russian Foreign Minister Sergei Lavrov said Moscow extremely concerned about the nuclear test happened in North Korea, while emphasizing that the Security Council resolutions related to North Korea should be strictly enforced.

At the same point of view, speak to reporters before launching the workshop on the crisis in Syria, US Secretary of State John Kerry also expressed deep concern about the latest move of North Korea. He affirmed to support his Russian counterpart Lavrov at the UN to clarify about the situation. Earlier that day, immediately after the news spread out, White House has informed that the United States is closely monitoring the situation on the North Korea peninsula.

Ned Price - spokesman for National Security Council USA stated: "We received information about the seismic on the North Korea Peninsula which near the nuclear test site of North Korea. We are continuing to follow the situation while working close with other partners in the region in order to assess situation".

US Air Force has deployed WC-135 Constant Phoenix aircraft to take air samples and examine whether they can confirm a nuclear test had occurred or not. Meanwhile, at a regular press conference, Hua Chunying - spokeswoman of Chinese Foreign Ministry said Beijing will exchange diplomatic note to the North Korea Embassy to protest the action of this country in occurring the 5th nuclear test.

Reacting to the incident, the General Director of International Atomic Energy Agency (IAEA) Yukiya Amano said the latest nuclear test by North Korea, if confirmed, cause "deep concern and disappointment" . In a statement, the head of the IAEA said: "This is a clear violation of UN Security Council resolutions, it expresses a complete disregard toward the continuously requirements from international. This is a serious disturbing action".

Jeffrey Lewis, an analyst at the Institute of International Studies in California based in Middlebury (United States) said that the strongest seismic event of 5.3 on the Richter scale in North Korea (9th September) if not present natural phenomenon, then it can only be caused by a devastating explosion of 20-30 kilotons.

If this is confirmed, it could be a bomb with explosive power which was bigger than the two bombs that the US dropped on Hiroshima and Nagasaki, Japan during World War II. Meanwhile, according to military sources in South Korea, the measured parameters from seismic can be caused by a devastating explosion of 10 kilotons.

This figure is less than the judgment of experts Jeffrey Lewis but still be considered as the largest devastating explosion ever. Nuclear engineering professor at Seoul National University, Kune Y. Suh said, the latest nuclear test if confirmed will be 2-3 times bigger compared to previous tests. Professor Suh said: "North Korea now has the ability to express their pride."