Trump's position is that the nuclear weapons are the only reason we'd bother invading. That they are safer without them for that reason alone and it's hard to disagree. They have a lot of soldiers and conventional weapons and could inflict enough damage to SK that is deterrent enough. If they can't directly attack us anyway who here really cares? Now the risk of NK launching a missile that can hit us half way around the world... Not very palatable. On Iran the nuclear deal didn't address the root of the issue. Iran's sponsor of terror and development of ballistic missiles. It takes money to develop weapons systems and Trump's position is that why should we allow the deal to continue which they are making a lot of money on, while simultaneously acting in bad faith, when the deal is set to expire anyway allowing nuclear development in a few years? Also not very palatable for us. The Iran deal was more about Obama's legacy than any real long term Iran solution. He used the same rosy eye's classes used on China. Just bring them in the fold, help build up their economy, and they will peacefully join the democratic world community. How has that worked out for us?