North Korea launched the rocket successfully few weeks back which was totally opposed by US, Japan and South Korea. These countries said that it was not a rocket launch but a long range missile test, which could carry nuclear war heads straight into the heart of US and Japan and all parts of South Korea.

Now North Korea is said to have commenced reprocessing of nuclear fuel rods which is the logical step to produce weapon grade uranium.  This action is indeed expected to furtner increase the tension between North Korea and the rest of the world.