The deployment of Sadr missiles is completely unfavorable to South Korea. The deployment of Sadr cannot protect Seoul, but it can actually threaten China and Russia. Different from the Paving Paw radar deployed in Taiwan Province Province before, the radar attached to the Saad system has higher accuracy. Even if the missile is launched from the inland of China, it will be monitored at the first time when the missile takes off, which will provide the US with more early warning time to organize interception or evasion, thus greatly reducing the missile's attack efficiency.

"Sade" has a range of 300 kilometers and can defend an area with a radius of 200 kilometers, while the anti-missile ranges of "Patriot -2" and "Patriot -3" are only 15 kilometers and 30 kilometers respectively. The interception altitude of "Sade" is 40- 180 km (that is, the upper atmosphere and the lower atmosphere), and this interception altitude interval happens to be the last flight stage of long-range and intercontinental missiles with a range of more than 3,500 km and the middle flight stage of short-range missiles with a range of less than 3,500 km, so it is called "the only land-based anti-missile system in the world that can intercept ballistic missiles inside and outside the atmosphere".

At the beginning of the design, the system compatibility was determined as the technical focus, and the interconnection problem with the navy was solved in the experiment, which was convenient for randomly forming various forms of multi-layer anti-missile systems with the navy's "ground-based mid-course interception", "Patriot" and "Aegis" systems to realize the sharing and cooperation of information resources.

In the specific geographical environment of Northeast Asia, after the "forward deployment" of "Sade" in South Korea, its radar monitoring range can deeply cover the hinterland of Northeast Asia. In peacetime, it can absorb a lot of information from countries in this region and accumulate target characteristic data, which can be used as an early identification and tracking tool in wartime to improve the probability of missile interception. This makes "Sade" not limited to acting as a "shield" for purely passive defense, but also has considerable offensive and defensive capabilities.

Geographically, the Korean peninsula is 360 kilometers wide from east to west and 1000 kilometers long from north to south. If this area needs missile coverage, there are enough short-range ballistic missiles with a range of 1000 km. In fact, the fundamental purpose is to eliminate the strategic deterrent capability of China and Russia. The United States quickly strengthened its comprehensive control capability in Northeast Asia by taking advantage of South Korea's missile panic against North Korea. At this point, it is also completely consistent.