I wouldn't worry too much about that. WWIII is not imminent.
The draft has not been re-instituted and probably won't be.
I understand the USMC has cancelled leaves (as they did before Desert Storm) but that seems prudent considering the situation in Iraq.
China and Japan are as concerned about N. Korea's wild semantics as we are, and are dead against the nuclearization of the Korean Peninsula. However, N. Korea's rabid talk is viewed as being political grandstanding to get more aid.
N. Korea is an isolated country, a failed, starving communist state, and does not play well with others in the world community.