Clinton: Time for 'rethinking' of USA approach to North Korea

United Nations Secretary General Ban Ki-moon condemned North Korea's latest nuclear test on Friday as a "brazen breach" of U.N. Security Council resolutions.

"We will step up pressure on the North by using all possible measures, including more, stronger sanctions on the North with the worldwide community and at the UN Security Council", she said. "North Korea is seeking to ideal its nuclear weapons and their delivery vehicles so they can hold the region and the world hostage under threat of nuclear strikes".

Seismic monitors detected a 5.3-magnitude "artificial earthquake" near the North's Punggye-ri nuclear test site, with "almost identical patterns" to previous detonations, according to South Korean experts.

Meanwhile, Yun has asked for cooperation from France in orchestrating new United Nations -led sanctions against North Korea's fifth and largest-ever nuclear test in defiance of continued calls from the global community to stop its nuclear program.

Estimates of the explosive yield of the latest blast have varied.

But analysts said it may be getting closer and its testing of ballistic missiles, including those created to launch from submarines, accentuates the threat it poses to US allies South Korea and Japan and ultimately the United States itself.

"While North Korea is testing nuclear weapons and carrying out these nuclear tests, their people are suffering".

The three countries have no intention to recognize North Korea as a nuclear power.

"Having witnessed with alarm what happened to Libya's Moamer Kadhafi and Iraq's Saddam Hussein, North Korea is deadly serious in believing its nuclear weapons are the only guarantee that can ensure its survival against an invasion by the United States", he said.

Gerard von Bohemen, New Zealand's Ambassador to the United Nations, announced after presiding over an emergency meeting of the Security Council in NY on Friday "appropriate measures" aimed at Pyongyang were being developed.

The paper also accused South Korea's leadership of being "military gangsters" who were provoking the North by conducting joint military exercises with the USA which encroached into their waters.

At the time, analysts concluded that North Korea's nuclear arms program was not a major security threat.

South Korean newspapers sounded the alarm on Saturday over what one termed the "nuclear maniac" Kim Jong-Un, saying the North Korean leader's fifth and biggest nuclear test is a game-changer demanding a tougher response.

He talked with his French counterpart Jean-Marc Ayrault on the phone on Friday and demanded the U.N. Security Council to join a cooperative move to enact additional bold, strong sanctions in response to the latest provocation by Pyongyang, according to the ministry.

After Pyongyang carried out its fourth nuclear test, the council in March adopted the toughest sanctions resolution to date, targeting North Korea's trade in minerals and tightening banking restrictions.

Pyongyang's state media said Friday the nuclear test had realised the goal of being able to fit a miniaturised warhead on a rocket.

US intelligence estimated the first North Korean test, in October 2006, produced an explosion equal to less than 1 kiloton or the equivalent of under 1,000 tons of TNT.

"We need to. redouble the pressure on North Korea", Carter told reporters on a visit to Oslo.

As a comparison, the nuclear bomb the United States dropped on Hiroshima had a blast yield of 15,000 tonnes.

It's uncertain whether Kim Jong Un was just flexing his muscles to prove he has more nuclear capability than the world previously thought, or whether it's something more, he said. The event produced tremors at a depth of 0 kilometers, 18 kilometers (11 miles) east-northeast of Sungjibaeham, North Korea.

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