North Korean defense minister Hyon Yong-chol was killed in front of hundreds of spectators for a variety of offenses, according to South Korea's spy agency. He was the fourth defense minister in 2-1/2 years.
A report in the Wall Street Journal suggests that US defense officials may have underestimated North Korea's nuclear capability.
North Korea's state media praised the knife attack and said it showed anti-US sentiment in South Korea. Ambassador Mark Lippert is recovering after surgery on his face and hand.
North Korea, amid ongoing fallout over 'The Interview,' has issued a new threat against the United States and refused to appear at a UN meeting on the country's human rights record.
Critics argue that Sony’s decision to pull 'The Interview' sets a dangerous precedent and could lead to a chilling effect in Hollywood. One Steve Carell film already has been canceled. Experts worry more movies about sensitive topics, under pressure from hackers or a wave of self-censorship, could follow.