North Korea went out of the five nation group, two months back. A month back it sent out the UN nuclear inspectors out of its nation, and followed it up with a long range nuclear capable missile testing two weeks back.

Now it has conducted two underground nuclear tests which is expected to communicate a tough message to South Korea / Japan and US. Unconfirmed reports say that North Korea is planning to conduct testing of many short range missiles over the next two weeks.

Reports also say that North Korea has resumed production of nuclear missile material by processing spent fuel in one of its closed factories.