The guided-missile destroyer USS Porter launches a Raytheon Co. Tomahawk cruise missile during strike operations while in the Mediterranean Sea. (Photographer: Ford Williams/U.S. Navy via Bloomberg)

As North Korea Threat Grows, U.S. Anti-Missile Warhead Stumbles

(Bloomberg) -- Raytheon Co.’s project to develop a new interceptor warhead for the U.S.’s ground-based missile defense system is estimated to increase in cost by almost $600 million because of “maj...