Korean Cheongung-II Missile Scores 96% Hit Rate, Boosting Seoul's Multi-Layer Defense Plans

South Korea's domestically developed medium-altitude surface-to-air guided weapon system "Cheongung-II," deployed in the United Arab Emirates, has drawn global attention after recording a 96% combat hit rate during Iran's large-scale missile attacks.

Analysts assess this as world-class performance, noting that even the U.S. Patriot PAC-3—widely regarded as the world's top air defense system—struggles to exceed 90% interception rates in large-scale combined attack scenarios.

However, despite multi-layered air defense networks, Israel, U.S. military bases in the Middle East, and major Gulf states have generally intercepted Iranian ballistic missiles and drones since hostilities began, but have not achieved 100% defense against Iranian attacks.

U.S. and Israeli forces continue large-scale airstrikes against key Iranian targets. Iran is retaliating with ballistic missiles and drones. Observers note that the effective operation of American, Israeli, and Gulf state air defense networks will be a key variable determining the outcome of this conflict.

Iran's wave attacks during the "12-Day War" in 2025 penetrated Israel's multi-layered air defense network—famous for its "Iron Dome"—causing some damage. While not devastating, the attacks caused dozens of casualties, primarily civilians, instilling significant fear among Israeli citizens.

Conversely, Iran's multi-layered air defense proved useless. Despite adding Chinese-made air defense missile systems and radar networks to existing Russian systems and deploying them around Tehran, Iran suffered massive damage as it completely failed to detect U.S. and Israeli airstrikes.

Notably, China's YLC-8B—a fourth-generation UHF-band 3D surveillance radar that China boasted could detect even American stealth aircraft—was easily penetrated in both Venezuela and Iran, earning Chinese weapons systems the stigma of "empty can radars."

A crucial observation is the proven effectiveness of hypersonic missiles that emerged in the Russia-Ukraine war. The interception rate of Patriot systems operated by Ukrainian forces with Western support plummeted from an initial 30% range to single digits against Russian missiles.

North Korea claims to have developed the new "Hwasong-11Ma" hypersonic missile. Flying at over five times the speed of sound, this missile could reach Seoul from Pyongyang in just two minutes while performing evasive maneuvers, making interception extremely difficult for defenders.

This raises the question: Is South Korea building a sufficiently dense air defense network against North Korea's various missiles, suicide drones, and even nuclear threats—given that North Korea's military capabilities far exceed Iran's? South Korea's air defense network is called KAMD (Korea Air and Missile Defense).

KAMD, built on a multi-layer defense strategy, is specifically designed to counter North Korean short- and medium-range ballistic missiles, as well as long-range artillery capable of striking key Seoul facilities through rapid mass launches. It can also defend against long-range missiles.

The defense system is divided into three main components. First is "detection and tracking." Early detection and tracking of enemy missiles upon launch is the most critical first step, utilizing various radar systems and satellite surveillance systems.

Next is "interception." Since intercepting enemy missiles targeting our territory during midcourse or terminal phases is crucial, our military maintains various interceptor missiles for this purpose.

Finally, "defense." The last stage of missile defense involves protective measures to minimize damage if missile interception fails. Our military's strength lies in having systems capable of simultaneously intercepting enemy missiles while conducting counterattacks through its defense infrastructure.

KAMD constructs defense systems divided into lower and upper tiers. Ballistic missiles pass through an ascent phase after launch, a midcourse phase of high-altitude flight in exoatmospheric space, and a terminal phase of re-entry into the atmosphere below 100km altitude and descent. Defenders typically divide air defense networks into upper and lower tiers based on 40km altitude during the terminal phase.

For lower-tier defense, M-SAM-II (Cheongung-II)—called the "Korean Patriot"—is the core system intercepting North Korean missiles at 30-40km altitude. The already-deployed M-SAM-I (below 20km altitude), an improved version, handles even lower altitudes. Patriot systems (PAC-2/PAC-3, below 40km altitude) also contribute to lower-tier defense.

The M-SAM-III (above 40km altitude), currently under development, will handle the middle zone between lower and upper tiers. M-SAM-III is a guided weapon with improved interception and engagement capabilities over M-SAM-II for effective response to North Korean missiles. Maximum interception altitude will expand to over 50km—twice that of Block-II. Development will cost approximately 2.83 trillion won through 2034.

Upper-tier defense includes the L-SAM (40-60km altitude)—called the "Korean THAAD"—which has completed development and is being operationalized. L-SAM can intercept missiles at 40-60km altitude in the high-altitude (upper tier) during the terminal phase. Together with U.S. Forces Korea's THAAD (40-150km), it forms one axis of the combined multi-layer air defense network.

Additionally, L-SAM-II (60-150km altitude) is under development. L-SAM-II features high-altitude interceptor missiles with elevated interception altitude (maximum over 100km) compared to the original L-SAM, and glide-phase interceptor missiles capable of long-range interception of aerodynamic flight missiles. It is expected to be an effective defense against hypersonic missiles that change direction laterally during glide phase. Development will cost approximately 2.71 trillion won through 2035.

In summary, the missile defense system assigns "low altitude" (below 40km) to U.S. Patriot (PAC-3) and Korean M-SAM-I and M-SAM-II (Cheongung-II); "medium altitude" (60-100km) to L-SAM and the in-development M-SAM-III; and "high altitude" (below 150km) to U.S. Forces Korea's THAAD units and the in-development L-SAM-II.

Military authorities plan to establish an "L-SAM Operations Unit" under the Air Force Missile Defense Command in 2027. The concept involves creating a separate L-SAM operations unit—similar to the U.S. Forces Korea THAAD base in Seongju, North Gyeongsang Province—integrated with lower-tier defense units to build a complex, multi-layered defense system.