Comments on Chung-in Moon “Obama’s North Korea policy and the June 15 South-North Joint Declaration”, 5/07/2009, http://www.eastasiaforum.org/2009/07/05/obamas-north-korea-policy-and-the-june-15-south-north-joint-declaration/
If the current situation if that "the deep concern is that any military escalation might not end in a conventional military conflict as North Korea nears the possession of operational nuclear weapons", then imagine what would hold for the future if North Korea's nuclear programs are more advanced and it becomes a full nuclear power? What could international community do then if North Korea continues to act in the way as it has done recently?
The summit diplomacy by US, the two Koreas only is unlikely to work in the long term, but only generates short term confusions. While there have been short comings of the six party talks, that forum may be the only effective way to further progress the denuclearisation issue in the Korea peninsular, because Japan, China and Russia will also be affected by what will happen to North Korea and in the Korea peninsular.
It seems a little too early and premature to specify how the two Koreas should be unified at this moment. As the article states already, North Korea views the US stated support of unification on those conditions as a hostile move to foster regime transformation in the North and to facilitate ‘Korean reunification through absorption’ a la mode Germany. It is unlikely to accept that in the short term.
The issue of unification should be deferred until the denuclearisation issue has been resolved successfully. The unification issue should be left for the two Koreas to decide, but for the foreseeable future, the interests of the two sides need to be respected.