U.S. intelligence has revealed it is creating a new classification for the missile recently launched by North Korea, reports CNN.
The two-stage missile is first a KN-17 liquid fuel missile, with which U.S. authorities are familiar. However, prior to launch, North Korea added a second stage. And now intelligence officials are trying to figure out how that second stage contributed to the success of Pyongyang's first-ever ICBM launch.
So far, it has been determined that the second stage consisted of a 30-second burn cycle, which may gave propelled it the extra distance.
One day after North Korea claimed it had fired a intercontinental ballistic missile, the United States and South Korea conducted a missile drill Tuesday night.
The news was confirmed by Pentagon spokesperson Dana White.
"Together with the Republic of Korea, we conducted a combined exercise to show our precision fire capability," she said in a statement.
The US Army and South Korea military personnel said they pursued the action to counteract North Korea's "destabilizing and unlawful actions."
The bi-lateral action comes after UN Ambassador Nikki Haley told the UN Security Council president that she wants an emergency session on North Korea.