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The North Korean satellite Kwangmyŏngsŏng-2 was launched from the Tonghae Satellite Launching Ground and passed over Japan, sparking concerns it may have been a trial run of technology that could be used to launch intercontinental ballistic missiles.

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Kwangmyŏngsŏng-2
North Korean satellite
Kwangmyŏngsŏng-2 was a satellite launched by North Korea on April 5, 2009.Source: Wikipedia (CC BY-SA)
Tonghae Satellite Launching Ground
Rocket launching site in North Korea
The Tonghae Satellite Launching Ground (Korean: 동해위성발사장), also known as Musudan-ri (무수단리), is a rocket launching site in North Korea.Source: Wikipedia (CC BY-SA)
Intercontinental ballistic missile
Ballistic missile with a range of more than 5,500 kilometres
An intercontinental ballistic missile (ICBM) is a ballistic missile with a range greater than 5,500 kilometres (3,400 mi), primarily designed for nuclear weapons delivery. Conventional, chemical, and biological weapons can also be delivered with varying effectiveness but have…Source: Wikipedia (CC BY-SA)