South Korea Conducts Live-Fire Exercises in Response to North Korea’s Nuclear Test

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South Korea has conducted a live-fire exercise early Monday morning local time in response to North Korea’s nuclear test Sunday.

The combined drill, carried out by the South Korean army and air force and intended to simulate a strike on North Korea’s nuclear test site, involved surface-to-surface ballistic missiles and F-15K fighter jets hitting targets off the east coast of South Korea, according to a statement form the country’s Joint Chiefs of Staff.

What happened:

— Shortly after North Korean state media released pictures of Kim Jong Un inspecting what it claimed was a nuclear warhead being placed inside a missile, the country conducted its sixth nuclear test.

— The explosion created a magnitude-6.3 tremor, meaning it is the most powerful weapon Pyongyang has ever detonated.

Latest developments:

— US Treasury Secretary Steven Mnuchin said he is drafting tough sanctions against North Korea, adding “this isn’t the time for just talk.”

— As US President Donald Trump was leaving a church service for Hurricane Harvey victims, he was asked by a reporter if the United States would attack North Korea. “We’ll see,” Trump responded.

— US Defense Secretary James Mattis told reporters in front of the White House that any threat to the United States, its allies or its territories “will be met with a massive military response, a response both effective and overwhelming.” He added: “Kim Jong Un should take heed of the United Nations Security Council’s unified voice. All members unanimously agreed on the threat North Korea poses and they remain unanimous in their commitment to the denuclearization of the Korean Peninsula … We are not looking to the total annihilation of a country, namely North Korea, but as I said, we have many options to do so.”

— Trump took to Twitter after the announcement and said North Korea’s “words and actions continue to be very hostile and dangerous to the United States.” He added that Pyongyang has become a “great threat and embarrassment to China, which is trying to help but with little success”; warned South Korea their “talk of appeasement with North Korea will not work”; and said Washington is considering “stopping all trade with any country doing business with North Korea.”

— Chinese President Xi Jinping, who is hosting an international financial summit, said in an opening ceremony speech that “incessant conflicts in some parts of the world and hotspot issues are posing challenges to world peace,” according to a transcript published by Chinese state media.

— Japanese Prime Minister said the threat against his country is now “more grave and imminent”; South Korean President Moon Jae-in called it an absurd strategic mistake.”

Emergency session

United Nations Secretary-General António Guterres said the test was “profoundly destabilizing for regional security,” and the UN Security Council has scheduled an emergency meeting to discuss the issue for Monday at 10 a.m. ET.

The Security Council also met last week after North Korea shot a missile that overflew the northern Japanese island of Hokkaido. Though the only thing to come from that meeting was a strongly-worded statement, the Security Council did unanimously pass a new round of sanctions in early August. Those are meant to choke off North Korea’s ability to bring in revenue across the globe.

“For months North Korea refrained from conducting a nuclear test and from launching missiles over Japan,” said David Wright, the co-director of the Union of Concerned Scientists Global Security Program. “It now seems to have decided to end that restraint.”

It’s unclear if a new round of sanctions is in the works, but Japan and South Korea have both signaled they are in favor of applying more diplomatic pressure on Pyongyang.

However, a noticeable divide has emerged between Washington and Seoul when it comes to how exactly the world should respond to North Korea’s latest move.

After President Trump’s tweet on South Korean appeasement, the South Korean President’s office said in a statement that it will “pursue the denuclearization of the Korean Peninsula through peace with our allies.”

The country’s current President Moon Jae-in, who was elected in May, is seen as more open to dialogue than his hawkish predecessor.

China, long viewed as North Korea’s only real regional ally, also condemned the test.

“We strongly urge (the) North Korea side to face up to the firm will of the international community on the denuclearization of the peninsula, abide by relevant resolutions of the UN Security Council, stop taking wrong actions that exacerbate the situation and are not in its own interest, and return to the track of resolving the issue through dialogue,” the Chinese Foreign Ministry said.

‘Perfect success’

North Korea’s test came hours after state-run media released images of leader Kim Jong Un inspecting what it said was a hydrogen bomb ready to top an ICBM, which the country would need to deliver a nuclear warhead to far-away locations.

State news anchor Ri Chun Hee hailed the test as a “perfect success” and the final step in attaining a “state nuclear force,” which North Korea sees as crucial in order deter any adversaries from invasion or attempting regime change.

Analysts have said for months that another nuclear test was likely on the way, with satellite imagery revealing that a tunnel had been dug earlier this year.

And the country has for years worked on miniaturizing a nuclear warhead so it can be fitted atop a long-range missile and survive the heat-intensive process of re-entering the earth’s atmosphere.

North Korea claimed the device tested Sunday was a hydrogen bomb, a much more powerful type of nuclear weapon that uses fusion instead of fission to increase the blast yield, or destructive power. It is also known as a thermonuclear bomb.

While it’s nearly impossible to verify the North Korean claim that the weapon was small enough to be put on a missile — short of having independent experts examine the test — the tremors that followed the blast can help scientists calculate how powerful the explosion was. Other countries will also take air samples to measure radiation levels, which will also offer important details.

NORSAR, a Norway-based group that monitors nuclear tests, estimated it had an explosive yield of 120 kilotons — which means the power of 120,000 tons of TNT.

South Korean officials gave a more modest estimate of 50 kilotons.

To put that in context, the nuclear bomb dropped on Hiroshima in 1945 — which instantly killed 80,000 people — created a yield of 15 tons.

The Democratic People’s Republic of Korea, as it’s officially known, claimed it set off a hydrogen bomb in its fifth nuclear test on September 9 of last year. That date is the country’s Foundation Day holiday.

The blast triggered a 5.3-magnitude seismological event; which said the data showed the detonation was more likely a boosted fission weapon.


Trump’s administration is now pursuing what it calls a strategy of “peaceful pressure” to get North Korea to bring its nuclear weapons program to the negotiating table.

North Korea itself has long said it is open to dialogue, but will not abandon its nuclear aspirations unless the United States abandons what Pyongyang considers a “hostile policy” against it.

Sanctions have long been a tactic the international community has employed to punish and isolate Pyongyang, but in many ways they have failed. The Kim regime developed its weapons and nuclear program despite the international measures designed to cripple the economy and which exacerbated periods of mass starvation.

The White House, meanwhile, has been accused of sending mixed messages on the issue and lacking a clear strategy. The President’s tweets regularly suggest he is not interested in dialogue.

“The Trump administration has clearly prioritized North Korea. Not all of that attention has been helpful,” said Adam Mount, a North Korea expert and senior fellow at the Center for American Progress. “The critical thing is now is that the United States does not cause more damage with its reaction than the test did itself.”

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