It would be interesting to know if there is a "red line" and if there is, exactly what it is.

This morning NK said that the last launch over Japan was preparation for an attack on Guam.

Violating Japan's air space and international law is something NK can get away with, but maybe Guam would be a missile launch too far.

The NK provocations are providing cover for both Iran and Pakistan to expand their WMD and ICBM programs as well while they cooperate with NK to advance their weapons' systems.

Your "funny" reaction to the world lurching toward war is odd, but it is not unusual among DP readers and staff, the vast majority of which do not care if the US is destroyed or not.  Indeed, domestically, they are doing their best to destroy America with politically-correct nonsense.

BTW.  For the 12th time, have come to a conclusion about GMD defense?

One theory about why Patriot and Aegis missiles were not deployed against the NK missile that flew over Japan is that they don't work.