North Korea says it tested new solid-fuel intermediate-range missile with hypersonic warhead

North Korea said Wednesday it tested another new hypersonic intermediate-range missile powered with solid propellants as it continues to expand its nuclear and missile program in the face of deepening tensions with neighbors and the United States.

The report by North Korean state media came a day after the South Korean and Japanese militaries detected the North launching the missile from an inland area around its capital toward its eastern sea.

North Korean state media said the test was supervised by authoritarian leader Kim Jong Un, who described the missile – named Hwasong-16B – as a key piece of his nuclear war deterrent he vowed to further build up to counter his “enemies,” a reference to the United States, South Korea and Japan.

Kim claimed that the North has now developed nuclear-capable, solid-fuel systems for “all the tactical, operational and strategic missiles with various ranges,” the Korean Central News Agency said.

In recent years, North Korea has been focusing on developing more weapons with built-in solid propellants. Those weapons are easier to move and hide and can be made to launch quicker than liquid-propellant missiles, which need to be fueled before launch and cannot stay fueled for long periods of time.

The North has since 2021 also been testing hypersonic weapons designed to exceed five times the speed of sound. If perfected, such systems could potentially pose a challenge to regional missile defense systems because of their speed and maneuverability. However, it’s unclear whether the North’s hypersonic vehicles consistently maintained a desired speed exceeding Mach 5 during tests in 2021 and 2022.

During Tuesday’s test, the missile’s hypersonic glide warhead after being separated from the launch rocket reached a peak height of 101 kilometers (62 miles) and flew about 1,000 kilometers (621 miles) while performing various flight maneuvers before landing in waters between the Korean Peninsula and Japan, the KCNA said.

The South Korean and Japanese militaries had assessed that the missile flew around 600 (372 miles) although Japan’s Defense Ministry announced a similar apogee with the North Korean report.

The North had also tested a purported hypersonic IRBM in January, which came years after it flight-tested liquid-fuel IRBMs. Experts say such weapons if perfected is potentially capable of reaching remote U.S. targets in the Pacific, including the military hub of Guam.Tensions in the region have risen since 2022 as Kim used Russia’s invasion of Ukraine as a distraction to accelerate his testing of missiles and other weapons.

The United States and South Korea have responded by expanding their combined training and trilateral drills involving Japan and sharpening their deterrence strategies built around strategic U.S. assets.

While supervising Tuesday’s test, Kim called for his country to further expand its nuclear and missile program to acquire “overwhelming power capable of containing and controlling” his enemies, who have “recently run higher fever in boosting their military alliance and staging all sorts of war drills.”

Hours after the launch, Seoul’s Defense Ministry announced that South Korea, the United States and Japan conducted a combined aerial exercise above waters near Jeju island that involved at least one nuclear-capable U.S. B-52 bomber.The United States in recent months has been increasing its deployment of strategic assets to the region, also including aircraft carriers and missile-firing submarines, in a show of force against North Korea.

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