Raytheon’s improved missile-defence warhead delayed by two years

Raytheon’s redesigned missile-interceptor warhead — an improvement on a system intended to defend against a potential North Korean attack — will be delayed for two years because of technical difficulties, according to the Pentagon’s Missile Defense Agency. The new version of the interceptor would be used in the $34-billion missile-defense system that’s intended to detect an incoming intercontinental ballistic missile from an adversary such as North Korea or Iran, dispatching a missile to crash into it and destroy it.