To be honest I think North Korea is less of a concern than Pakistan and Saudi. North Korea has nearly always shown itself to be rational actor. It's predicable

To be honest I think North Korea is less of a concern than Pakistan and Saudi. North Korea has nearly always shown itself to be rational actor. It's predicable in its unpredictability. Pakistan it's nuclear control is less so, especially if you adhere to the reality that Saudi has de facto nuclear weapons there also. In reality Pakistan nukes might be the only reason the US stays in Afghanistan.