Why we don't attack N. Korea.
A simple primer.
Because N. Korea is not making war on its own people. They only kill them one by one. If we attacked N. Korea, we'd be into it with China. We could NOT win a war against N. Korea. We spent several years trying in case you don't remember.
The crux of the matter: IT WOULD BE STUPID TO ATTACK N. KOREA. Now get off N. Korea. It has no bearing on Libya.