North Korea Warns the world to stay out of part of its waters

A more and more defiant North Korea now is warning the world to stay out of part of its eastern waters for 16 days. Why? Because N. Korea claims that they will hold  yet another military drill. They have become openly defiant to the entire world. All the major countries in the region have outwardly stated that they do not condone N. Korea's actions with the missile firings. It will now be a matter of time that these countries will take offensive action against North Korea.
What are they trying to prove? Why are the N. Korean's so intent  with expanding their nuclear capabilites?
They must feel threatened. North Korea has been a reclusive communist nation for a long time now. What are the consequences if ships enter the designated waters during the drill? It just so happens that the dates fall within the timeframe cited by the Japanese midia last week for a possible North Korea missile launch toward Hawaii. If these findings are fact, then President Obama must take action against N. Korea now.
Just recently, the U.N. SecurityCouncil adopted a declaration condemning North Korea for their moves. The north claims that such a move is a declaration of confrontation and war.
But how can you be officially in a war if you do not attack the opposite side. At the present time, N.Korea's claim of war is no where near valid. Unless they continue agression against any other power, there is no war. There takes two to have an opposition, and if there is no opposition, there is no war. In order for a war to take place, the world must feel more threatened, and then someone will take action.
In another twist to the story, The U.S. military is tracking a North Korean ship in the Pacific that is believed to be carrying illicit weapons or technology, according to a U.S. senior official. It will now be a matter of time that the North Korean vessel will be boarded. As the world will watch, and further threats come from the communist country of N. Korea, hopefully N.Korea would come to its senses and stop launching the missles which are a direct threat to the world.