South Koreans Concerned Musudan Could Defeat Patriot Missile Defense System
The Patriot PAC-3 is designed to shootdown short range ballistic missiles not an intermediate range missile which the category the Musudan falls under. That is what the THAAD system is for:
A medium-range ballistic missile launched Wednesday by North Korea flew at an average speed of Mach 11.3, or 11.3 times faster than the speed of sound, according to an analysis of a timeline seen on a monitor at the launch site.
The hypersonic speed of Mach 11.3 has sharply raised concerns about the capabilities of the Patriotic Advanced Capability-3 (PAC-3) missile defense system that the South Korean military has purchased to upgrade its existing PAC-2 missile defense system. The PAC-3 flies at Mach 3.5 to 5 and intercepts incoming missiles at altitudes of up to 40 kilometers (25 miles). [Joong Ang Ilbo]
You can read more at the link, but a professor at the Korea National Defense University explains in the article that THAAD can shoot down the Musudan. This is all the more reason why both Japan and the ROK should look at either purchasing their own THAAD system or deploying one into theater from the US.
