It is very difficult to draw any strategic consideration from the recent escalations in the Korean peninsula. No significant conclusion can be reached through merely analytical means.
North Korea is flexing its muscles, again. The UN imposing further sanctions onto North Korea in a (late) response to its December 2012 missile and February 2013 nuclear tests had the regime in Pyongyang go ballistic leading to angry rhetoric and threats to attack the US and its allies with ballistic and nuclear weapons.
The forms of international intervention have deeply changed since the end of the Cold War. They have assumed a democratic character: recent cases of intervention are mainly carried out by democracies and are justified by democratic principles as the protection of human rights or the promotion of human dignity. Moreover, they are aimed at the democratization of the target-country. This unprecedented democratic attitude has given birth to a new kind of relationship between international intervention and democratization - which in the past was understood only as a domestic political process.