North Korea test-fired a new, smaller ballistic missile from a submarine, state media confirmed on Wednesday, a move that analysts said could be aimed at more quickly fielding an operational missile submarine.
The statement from state media came a day after South Korea’s military reported that it believed North Korea had fired a submarine-launched ballistic missile (SLBM) off its east coast, the latest in a string of North Korean missile tests.
The White House urged North Korea to refrain from further “provocations”, with spokeswoman Jen Psaki saying on Tuesday the United States remained open to engaging diplomatically with North Korea over its weapons programmes.
Pyongyang so far has rejected those overtures, accusing the United States and South Korea of talking diplomacy while ratcheting up tensions with their own military activities.
The United States and Britain plan to raise the North’s latest test during a closed-door U.N. Security Council meeting on Wednesday, diplomats said.
The “new-type” SLBM was launched from the same submarine involved in a 2016 test of an older SLBM, North Korea’s state news agency KCNA said.
North Korea has a large fleet of aging submarines, but has yet to deploy operational ballistic missile submarines beyond the experimental Gorae-class boat used in the tests.
Photos released by KCNA appeared to show a thinner, smaller missile than North Korea’s earlier SLBM designs, and may be a previously unseen model first showcased at a defence exhibition in Pyongyang last week.
A smaller SLBM could mean more missiles stored on a single submarine, although with a shorter range, potentially putting nuclear-armed North Korea closer to fielding an operational ballistic missile submarine (SSB).
“Though a smaller North Korea SLBM design could enable more missiles per boat, it could also enable smaller less challenging SSB designs, including easier integration/conversion on pre-existing submarines,” Joseph Dempsey, a defence researcher at the International Institute for Strategic Studies, said on Twitter.
Still, the development was expected to have only a limited impact on Pyongyang’s arsenal until it made more progress on a larger submarine that has been seen under construction.
“It just means they’re trying to diversify their submarine launch options,” said Dave Schmerler, a senior research associate at the James Martin Center for Nonproliferation Studies in California. “It’s an interesting development but with only one submarine in the water that can launch notionally one or two of these it doesn’t change much.”
Kim Dong-yup, a former South Korea Navy officer who teaches at Seoul’s Kyungnam University, said the missile could be an advanced version of the KN-23, a short-range ballistic missile first tested in 2019, citing its range, visual resemblance and stated guidance technologies.
KCNA said the new SLBM featured advanced capabilities including “flank mobility and gliding skip mobility.”
“(The SLBM) will greatly contribute to putting the defence technology of the country on a high level and to enhancing the underwater operational capability of our navy,” KCNA added.
Schmerler said “glide skip” was a way to change a missile’s trajectory to make it harder to track and intercept.
North Korea has conducted several tests in recent years with short-range ballistic missiles that analysts say are designed to evade missile defence systems in South Korea.
North Korean leader Kim Jong Un was not reported to have attended Tuesday’s test.
The missile was launched from the sea near Sinpo, where North Korea keeps submarines as well as equipment for test-firing SLBMs, South Korea’s Joint Chiefs of Staff said on Tuesday.
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