Its always funny when North Korea start talking about using nuclear weapons on other countries. The only result of all that talk is feeding the western rhetoric.

I don't know if the Star Wars program was a bluff that led to the fall of the Soviet Union, or a working system at the time that Reagan started talking about it.

NATO's Ballistic Missile Defense is a reality. (http://www.nato.int/cps/en/natolive/topics_49635.htm)

The whole debacle that started between Ukraine and Russia has close relations with the possibility of placing elements of it on Ukrainian soil.

Russia didn't like that :)

In that context, North Korea's nuclear weapons program doesn't sound that serious.

On the other hand, a lot of big players want a slice from that country and its rich mineral resources. China would like some, the west would like some (through democratic elections and free markets of course ;) )

We could only wait and see what their end game is.