The Hwasong-17 is the largest road-mobile, liquid-fuelled ICBM in the world.
The launch of the banned missile was detected by neighbours South Korea and Japan on Thursday, hours before South Korean President Yook Suk-yeol was due to fly to Tokyo for a summit with Japanese Prime Minister Fumio Kishida.
It was the latest in a series of weapons tests that have coincided with Freedom Shield – the large-scale joint military exercises between the United States and South Korea that began on Monday and that Pyongyang regards as a rehearsal for invasion.
Confirming the ICBM test on Friday, North Korea’s state media said it was intended to demonstrate a “tough response posture” and was a response to the “provocative and aggressive” military drills.
Pyongyang said the missile travelled at a maximum altitude of some 6,000 km (3,700 miles) and flew some 1,000 km (620 miles) “before accurately landing on the preset area in the open waters off the East Sea of Korea,” also known as the Sea of Japan.
Photos accompanying the reports in state media showed North Korean leader Kim Jong Un watching the launch with his daughter and included pictures from space apparently shot by a camera mounted on the missile.
“The launching drill of the strategic weapon serves as an occasion to give a stronger warning to the enemies intentionally escalating the tension in the Korean peninsula while persistently resorting to irresponsible and reckless military threats,” state news agency KCNA said.
Seoul and Washington have ramped up defence cooperation in the face of growing military and nuclear threats from North Korea, which conducted a record number of weapons tests in 2022 as it steps up its military modernisation campaign.
This week it has tested short-range ballistic missiles and strategic cruise missiles from a submarine.
Ballistic missile tests are banned under United Nations Security Council resolutions over North Korea’s nuclear programme.
The Hwasong-17 is North Korea’s biggest missile and is the largest road-mobile, liquid-fuelled ICBM in the world.
It is believed to have the range to deliver a nuclear warhead to targets anywhere in the US.
It was first tested in March last year, marking North Korea’s first ICBM launch since 2017.