SEOUL, South Korea (AP) - Two days after North Korea test-launched its most powerful missile to date, a clearer picture is emerging of Pyongyang's impressive technological achievement - and what still remains before it can legitimately threaten the continental United States.
Many questions remain, but there's broad agreement from government and outside analyses that the huge Hwasong-15 intercontinental ballistic missile represents a significant step forward, putting the North very close to its goal of a viable arsenal of nuclear-tipped long-range missiles - maybe as early as the middle of next year.
The two-stage liquid-fuel missile fired Wednesday is potentially capable of striking targets as far as 13,000 kilometers (8,100 miles), which would put Washington within reach, South Korea's Defense Ministry said Friday in a report to lawmakers. It's also considerably larger than North Korea's previous ICBM, the Hwasong-14, and designed to deliver larger warheads, the ministry said. That would seem to confirm the North's boast after the launch that the Hwasong-15 can carry "super-large heavy nuclear warheads."
Michael Elleman, an analyst at the International Institute for Strategic Studies, said it appears that the Hwasong-15 can deliver a 1,000-kilogram (2,200 pound) payload to any point on the U.S. mainland. North Korea, which has so far conducted six nuclear tests, has almost certainly developed a nuclear warhead that weighs less than 700 kilograms (1,543 pounds) , if not one considerably lighter, Elleman wrote Friday on the 38 North website .
North Korea said the missile on Wednesday reached an apogee of 4,475 kilometers (2,780 miles) and flew 950 kilometers (600 miles), splashing down close to Japan after being launched from a site near Pyongyang on a high trajectory to avoid other countries; that flight data was similar to what was announced by South Korea's military.
It's still not clear how close the missile is to being combat ready. The Defense Ministry told lawmakers that further review is needed to determine whether the missile's warhead can survive atmospheric re-entry, accurately hit a target and detonate properly.
South Korean President Moon Jae-in shared his country's assessment with President Donald Trump in a telephone conversation Thursday night. The leaders reaffirmed their commitment to strengthen pressure and sanctions on Pyongyang to discourage its nuclear ambitions, Seoul's presidential office said Friday. Eugene Lee, spokeswoman of South Korea's Unification Ministry, which deals with affairs related to North Korea, said the Seoul government thinks the North hasn't crossed the "red line" in weapons development yet because it hasn't perfected its ICBMs.
North Korea has described its new ICBM as "significantly more" powerful than the Hwasong-14, which the North flight tested twice in July. Photos and video of the launch released by the North's state media on Thursday confirm the Hwasong-15 is an entirely different beast.
After initially assessing the missile as a modified version of the Hwasong-14 following Wednesday's launch, South Korea's military now says the Hwasong-15 is considerably larger and potentially capable of carrying bigger payloads.
The Hwasong-15 is longer than the Hwasong-14 by 2 meters (6.56 feet) and also thicker, particularly its second stage, which is 80 centimeters (2.62 feet) wider than Hwasong-14's second stage, Seoul's Defense Ministry said.
Hwasong-15's 9-axle transport vehicle, which the North also revealed for the first time, was also 2 meters (6.56 feet) longer than the 8-axle truck the North used to carry the Hwasong-14s.
The Hwasong-15's first stage is powered by a pair of engines that were also used in the single-engine first stages of the Hwasong-14, the ministry said. It was still working to analyze the construction of the second stage.
It's possible that the missile has been designed to carry simple decoys, or other countermeasures, to confuse the U.S. missile defense system, Elleman wrote.
He added that "if low confidence in the missile's reliability is acceptable, two or three test firings over the next four to six months may be all that is required before Kim Jong Un declares the Hwasong-15 combat ready."
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