North Korea reportedly returned to a nuclear test on Wednesday (22/3/2017) on the country's east coast. South Korea called the trial a failure. Similarly, the United States detects North Korea's missile launch and calls for failure because missiles explode within seconds after launch. Until now, the South Korean side is continuing to investigate North Korean missile tests including its projectile type.

South Korea is also vigilant about North Korea, which is now undergoing nuclear tests. "Our military judges that the ballistic missiles launched yesterday by North Korea are Scud missile variants, and we stand by the possibility of launching additional missiles and provocations from North Korea," said the head of South Korea's Joint Chief of Staff (JCS) public affairs, Roh Jau-cheon , as quoted nknews.org.

Before conducting this missile test, North Korea first tested the machine. The test of this machine became the historical event of the birth of the national rocket industry. North Korean leader Kim Jong-un also praised "the unprecedented progress made by the country's defense industry."

The test machine coincided with an Asian tour from US Secretary of State Rex Tiller covering Japan, South Korea and China. Even the North Korean nuclear threat became one of the main issues discussed during the visit.

In February, South Korea also reported that North Korea had fired ballistic missiles. North Korean missile and nuclear tests and aggressive statements cause anxiety and anger for regional countries.

The South Korean government then conducts a national security meeting to discuss North Korea's missile launch. Even the South Korean military commander mentioned the launch as a form of "show of strength."