Kim Jong Un runs concentration camps and starves his people. He also looked at Iran’s ruins and drew the obvious conclusion: nuclear weapons are the only guarantee against American military action. The argument is made by a monster. That does not make it wrong.
Pakistan seeded the nuclear crisis it is now asked to resolve. Abdul Qadeer Khan transferred centrifuge designs to Iran. Washington pardoned Islamabad without consequence. Now the same Washington routes its Iran diplomacy through Pakistan. The bad actor designation expires when you become useful.