The US has problems of its own and with the elections coming up doubt anyone will be doing anything to cause a public out lash. The people don't really have a favorable opinion of North Korean (at least that what I believe).

Also it's not just one man that has North Korean so, it's the way their society is. From what I have seen from documentaries and talking to people from North Korea and South Korea, the North citizens are basically brainwash and isolated from any knowing of what is really happening and how the world and their neighbors view them. All they know is that their government tells them. Just because Kim Jong Il died doesn't mean the propaganda machine isn't in full swing.

With the US and South Korean stoppage of aid to North Korean the country has worsen dramatically.

That attack to the South Korean exercise was both a cry for help and to fuel the propaganda machine. To their people it says we are not afraid and are not weak. To the world it said we're a big baby and if you don't help us we will act out, even Russia and China are tired of them.

We do live in interesting times but the future doesn't look so bright anywhere. Oh well life goes on.