OK, after Korean war. That started in first place because Russians, Chinese and Americans had their noses in other nations territories. usual business.
All I want to say is that North Korea won't attack anyone if their regime feels safe of not being attacked. They have zero incentives to do it and they might be all kind of stuff but not stupid. Nuclear weapon for them is a guarantee of their safety. I won't say they won't attack first because they might do it if they feel threatened but leave them alone to do their business and they won't do it. As much suffer they can cause with that weapon, they know they'd suffer much more.
Do you think it's worth the risk of allowing them to build up their arsenal to the point of being able to accurately at western nations with warheads?
Also do you believe the Geneva Convention should be adhered too?