NK has learned a lesson from Iraq, but it's not the lesson we hoped to teach it. In their view, Iraq was attacked exactly because it had too little WMD capability and had staked its reputation on having no WMD at all. That's why NK acts differently: They're totally upfront about their nuclear capabilities (even bluffing when necessary) and won't repent for anything. As a result, not only have they forced us to talk to them, they're making us do it largely on their terms.