North Korean state media warned the United States that Pyongyang could carry out a "superhuman preventive attack" after Secretary of State Rex Tillerson stated that the United States is considering ways to exert pressure on the country because of its nuclear program. President Donald Trump took a sharp stance against North Korean leader Kim Jong Un, who rejected the advice of his only big ally China and continued to work on nuclear and missile programs in spite of UN Security Council sanctions.

"In the event of the launch of our super-powerful preventive assault, not only will American imperialist invasion forces in South Korea be completely and momentarily destroyed and transformed into the ashes, but also the whole United States," announced Rodong Sinmun, the official journal of the North Korean ruling Workers' Party.

North Korea regularly threatens that it will destroy Japan, South Korea, and the United States, and does not give up its own belligerence even after a failed missile firing test on Sunday, the day after the military parade.

The United States pressures North Korea over its nuclear program

Tillerson said on Wednesday that the United States were considering ways to put pressure on North Korea for its nuclear program. "We consider all the options for North Korea since it is a country that supports terrorism. We are also finding other ways to put pressure on the regime in Pyongyang to re-engage in conversations with us, but on a different basis than the interviews," he said.

Vice President Mike Pence, on a tour of the Asian Allies, repeatedly stated that the "period of strategic patience" with North Korea was completed.

President of the House of Representatives of Congress Paul Ryan said during a visit to London that the military option must be part of the pressure. "Civilized countries can not allow this dictator to have such power," he said.

South Korea is making preparations

Officer of South Korean President Hwang Kyo-Ahn, at a meeting with senior officials, again called upon the military and security agencies to be cautioned.

The defense ministry has announced that the US and South Korean air force are holding annual military exercises, code-named Max Thunder, until April 28th.

North Korea typically practices such invasion preparations.

Warning from the experts

American generals are insisting for years now that the United States could overthrow the missile fired by North Korea.

However, independent scientists and government investigators are saying the opposite, according to NBC News.

A group of experts found that generals during the creation of a $ 40 billion defensive system, completely ignored its effectiveness, but generals believe the defense system GMD can stop a ballistic missile with nuclear weapons fired from North Korea or Iran.

"They deplore political leaders to have military capabilities they do not really have," said one of the experts, physicist David Wright, of the United States of UCS. Spokeswoman of the Pentagon's Missing Defense Agency Chris Johnson said he was "confident in their ability to defend the homeland from ballistic missiles".

While the missile system had flaws in the early stages, "we have significantly improved it over the last few years to be sure that the system is ready for action," Johnson added.

The government's investigative agency, the Audit Office, found last year that "the tests did not prove that GMD could defend its homeland". Of the nine simulated attacks since 2004, interceptors failed to hit targets six times, though the tests were much less demanding than a real attack would be, the Los Angeles Times discovered.

In July, the UCS issued a 47-page report in which the US approach to missile defense is called "disastrous." The GMD wrote: "It has poor test results and no evidence that it can stop the oncoming rocket in real terms."

The government official said on ABC News yesterday, "Nothing of this system works, nothing, interception programs do not work. Sometimes they do hit the targets, but it's not reliable and we can not risk disaster if we miss."

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