As I read...[in http://www.fas.org/nuke/guide/dprk/missile/td-2.htm and other articles], the North Korean missiles use a fuel based on nitric acid that is so corrosive that they have to be practically rebuilt after test firings -- any launch is, in effect, a test. The upshot is that, although not yet formally tested (although it is scheduled to be so soon), the TD2 should be considered already available, and at least Alaska within reach -- if Kim Jon Il really felt he was going the way of Saddam Hussein (what this current saber-rattling is all about, if you ask me -- I doubt he's as concerned about, say, the energy or even food needs of his nation as a whole) then he could deal a devastating blow to the economy of the rest of the world by hitting our oil processing facilities in Alaska, as Hussein might in Saudi Arabia (remember what his retreating troops did to Kuwaiti oil fields?) -- world markets for energy (key to all industry) would be upended, for perhaps as long as the radiation persisted.