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North Korean leader Kim Jong-un gives field guidance during a visit to the Chemical Material Institute of the Academy of Defence Science in this undated photo released by the state’s Korean Central News Agency (KCNA) in Pyongyang, on August 23, 2017. Picture: KCNA VIA REUTERS
North Korean leader Kim Jong-un gives field guidance during a visit to the Chemical Material Institute of the Academy of Defence Science in this undated photo released by the state’s Korean Central News Agency (KCNA) in Pyongyang, on August 23, 2017. Picture: KCNA VIA REUTERS

Seoul — With photographs obliquely showing a new rocket design, North Korea has sent a message that it is working on an intercontinental ballistic missile (ICBM) more powerful than any it has previously tested, weapons experts said on Thursday.

If developed, such a missile could possibly reach any place on the US mainland, including Washington and New York, they said.

North Korea’s state media published photographs late on Wednesday of leader Kim Jong-un standing next to a diagram of a three-stage rocket it called the Hwasong-13. Missile experts, who carefully examine such pictures for clues about North Korea’s weapons programmes, said there is no indication that the rocket has been fully developed. In any case, it had not been flight tested and it was impossible to calculate its potential range, they said.

However, a three-stage rocket would be more powerful than the two-stage Hwasong-14 ICBM, tested on two occasions in July, they said. South Korean and US officials and experts have said the Hwasong-14 possibly has a range of about 10,000km and could strike many parts of the US, but not the East Coast.

"We should be looking at Hwasong-13 as a 12,000km class ICBM that can strike all of the mainland US," said Kim Dong-yub, a military expert at Kyungnam University’s Institute for Far Eastern Studies in Seoul.

A distance in excess of 11,000km will put Washington and New York within range from anywhere in North Korea.

"It’s likely meant to show that they are working on a three-stage design with greater boost and range," said retired Brigadier General Moon Sung-muk, an arms control expert who has represented South Korea in military talks with the North. "They tested the Hwasong-14, which has an estimated range of 9,000km, 10,000km. This one can go further, is the message."

Tensions ease

Pyongyang’s intentions in showing plans for the new missile were clear, the experts said. The photographs were accompanied by a report of Kim issuing instructions for the production of more rocket engines and warheads during a visit to the Academy of Defence Sciences, an agency he has set up to develop ballistic missiles.

"We’re getting a look at it to emphasise domestic production of missiles, and to advertise what’s coming next," said Joshua Pollack, a nuclear weapon and missile systems expert who edits the US-based Non-proliferation Review.

The photographs were published as tensions between North Korea and the US appeared to have eased slightly after the isolated nation tested the Hwasong-14 and later threatened to fire missiles toward the US Pacific territory of Guam.

Tuesday’s report, carried by the KCNA news agency, lacked the traditionally robust threats against the US, and US President Donald Trump expressed optimism about a possible improvement in relations.

Kim, the expert at Kyungnam University, said that from a design standpoint, Hwasong-13 was similar to the KN-08, a three-stage missile of which only a mock-up has previously been seen at military parades. But the new images show a modified design for the main booster stage that clusters two engines.

Another picture published by North Korean state media showed Kim Jong-un standing next to a rocket casing that appeared to be made of a material that could include plastic. Experts said if such material were used in the missile, it would be intended to reduce weight and boost range.

The photographs also showed the design for the Pukguksong-3, likely a new solid-fuel, intermediate-range ballistic missile being developed for submarine launches.

Moon, the former South Korean general, said the pictures were intended to show that the North was refusing to bow to international pressure to call off its weapons programmes: "The North is trying to be in control of the playing field."

Reuters

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