In response to the failed April 13th North Korean attempt to launch a satellite using a long-range ballistic missile, South Korea released a video showing launches of unidentified cruise missile and a ballistic missile, both indigenously developed in South Korea. The cruise missile was apparently the Hyunmoo 3, the ballistic missile is most obviously the Hyunmoo 2 developed in the late 1990s. The presentation made by Major General Shin Won-sik, an officer responsible for policy planning at the Ministry of defense in Seoul was meant to show North Korea that the south had weapons that could reach anywhere in the north. The two missile programs were developed indigenously and secretly for the at least four decades, extending the reach and offensive capability of South Korea to balance a large number of ballistic missiles deployed by the North. North Korea has about 600 ballistic missiles aimed at South Korea.

Three years ago, South Korean media reported that a new cruise missile, with a range of 1,000 kilometers had secretly entered production in 2008. This has followed a series of test flights, some conducted in 2006, as mentioned in a US embassy brief published by Wikileaks.

The recent information and video release indicates both programs are well. The ballistic missile program is progressing through flight-testing. The short-range ballistic Hyunmoo II ballistic missile with a range of 300 km uses solid propellant and has GPS/INS guidance, enabling it to hit a target at ‘several tens of meters’ accuracy. To compensate for the relatively low accuracy it is expected the warhead uses cluster munitions. Hyunamoo II has the general shape of the Russian Iskander missile. The ready to fire missiles are carried in four trailer-mounted cylindrical launchers-containers.

The majority of the work took place at the South Korean ADD, with assistance from abroad. These developments were conducted at low profile, as Seoul was facing significant U.S. objection to such activities.

The Koreans began experimenting with ballistic missiles during the 1980s, converting a Nike Hercules Surface to Air missile into a ballistic missile, a process similar to that taken be the Chinese converting an SA-2 into the CSS-8 ballistic missile. While the Koreans strived to extend the range and payload of their missiles, to meet the challenge posed by North Korean weapons, they were content with the quiet understanding form Washington to limit their missile’s range to 180 km; Since the mid- 1990s Seoul gradually expanded the limits of their missiles, along with U.S. relaxation of export permits, providing Seoul access to the ATACMS-1a missile, meeting the upper limit of the Missile Technology Control Regime (MTCR). South Korea has accepted the limitations of MTCR but public opinion in the country is calling for that limit to be broken, thus placing the entire area of its hostile neighbor North Korea vulnerable to ballistic missile attack from the south. Needless to say, North Korea is not accepting any limitations of missile development, manufacturing or export.In parallel, the Koreans began development of a cruise missile, initially reaching 500km and later extending maximum range beyond 1000km, both challenging the MTCR limits. Most recently the missile attained further increased range of 1,500 km, placing at risk not only North Korea, but also parts of China and Japan.