First, North Korea is only making threats because Kim Jong Un is pissed about the U.S. conducting military drills over the Koreans peninsula, the U.S. also conducted nuclear drills that somehow reminds Kim Jong Un on how the Korean war came to an end in the 50's. However, Kim Jong Un may be serious about destroying U.S. bases in South Korea which is also invading South of Korea. Now if a war does break out with the usage of Nuclear weapons the United States will wipe out North Korea and leave them to dust. The United States has many Nukes and submarine Nukes, we're set. Also, the U.S. has much more soldiers than the North Korean's. I am safe to say it because in a yahoo report it mentioned that Kim Jong Un has his 1 million soldiers set for battle. Second, the United States is highly developed in technology, we scared the crap out of North Korea when we flew in stealth BOMBERS! Kim Jong Un had to start another threat! How foolish of him.