SEOUL, South Korea (AP) — North Korea boasted Friday that the new intercontinental ballistic missile it just test-launched is “the world’s strongest,” a claim seen as pure propaganda after experts assessed it as being too big to be useful in a war situation.
The ICBM launched Thursday flew higher and for a longer duration than any other weapon North Korea has tested. But foreign experts say the test failed to show North Korea has mastered some of the last remaining technological hurdles to possess functioning ICBMs that can strike the mainland U.S.
The North’s Korean Central News Agency identified the missile as a “Hwasong-19” and called it “the world’s strongest strategic missile” and “the perfected weapon system.” The official media outlet said leader Kim Jong Un observed the launch, describing it as an expression of North Korea’s resolve to respond to threats to North Korea’s security.
The color and shape of the exhaust flames seen in North Korean media photos of the launch suggest the missile uses preloaded solid fuel, which makes weapons more agile and harder to detect than liquid propellants that in general must be fueled beforehand.
But experts say the photos show the ICBM and its launch vehicle are both oversized, raising a serious question about their wartime mobility and survivability.
“When missiles get bigger, what happens? The vehicles get larger, too. As the transporter-erector launchers get bigger, their mobility decreases,” Lee Sangmin, an expert at South Korea’s Korea Institute for Defense Analyses.
The Hwasong-19 was estimated to be at least 28 meters long (92 feet) while advanced U.S. and Russian ICBMs are less than 20 meters long (66 feet), said Chang Young-keun, a missile expert at Seoul’s Korea Research Institute for National Strategy. He suggested that South Korea’s warning on Wednesday that a North Korean ICBM launch was imminent was related to the missile’s size.
“In the event of a conflict, such an exposure makes the weapon a target of a preemptive attack by opponents so there would be a big issue of survivability,” Chang said.
Lee Illwoo, an expert with the Korea Defense Network in South Korea, said North Korea may have developed a larger missile to carry bigger and more destructive warheads or multi-warheads. If that’s the case, Lee said North Korea could have used liquid fuels as they generate higher thrust than solid fuels. He said some advanced liquid propellants can be stored in missiles for a few weeks before liftoffs.
Lee said North Korea may have placed a dummy warhead on the Hwasong-19 to make it fly higher.
In recent years, North Korea has reported steady advancement in its efforts to obtain nuclear-tipped missiles. Many foreign experts believe North Korea likely has missiles that can deliver nuclear strikes on all of South Korea, but it has yet to possess nuclear missiles that can strike the mainland U.S.
The hurdles it has yet to overcome, according to experts, include ensuring its warheads survive the heat and stress of atmospheric reentry, improving the altitude control and guidance systems for the missiles, and being able to use multiple warheads on a single missile to defeat missile defenses.
“Acquiring reentry technology is currently the most important goal in North Korea’s missile development, specifically for ICBMs, but they just keep increasing the ranges instead. This possibly suggests they still lack confidence in their reentry technology,” Lee Sangmin said.
Chang said Friday’s state media dispatch on the launch lacks details on the technological aspects of the Hawsong-19 and focused on publicity.
Other North Korean claims about its weapons capabilities have been met with wide outside skepticism.
In June, North Korea claimed to have tested a multiwarhead missile in the first known launch of such a weapon, but South Korea said the weapon instead blew up. In July, when North Korea said it had test-fired a new tactical ballistic missile capable of carrying “a super-large warhead,” South Korea said the claim was an attempt to conceal a botched launch.
Observers say that Thursday’s launch, the North’s first ICBM test in almost a year, was largely meant to grab American attention days before the U.S. presidential election and respond to international condemnation over North Korea’s reported dispatch of troops to Russia to support its war against Ukraine.
North Korea’s reported troop dispatch highlights the expanding military cooperation between North Korea and Russia. South Korea. the U.S. and others worry North Korea might seek high-tech, sensitive Russian technology to perfect its nuclear and missile programs in return for joining the Russian-Ukraine war.
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