What is THAAD? The powerful US anti-missile defense system is being sent to Israel – along with up to 100 supporting troops

​ The THAAD defense system is one of the US military’s most powerful anti-missile weapons, capable of intercepting ballistic missiles at ranges of 150 to 200 kilometers (93 to 124 miles) and with a near-perfect success rate in testing. Read More Breaking News, Latest News and Videos | CNN