CNN’s Will Ripley, who has reported from North Korea 17 times, says that Kim “is trying to send the world a positive signal ahead of a potentially monumental summit with President Donald Trump. But the steps he is taking at this point are largely symbolic. Operations at missile and nuclear testing sites could easily be resumed, since North Korea has not agreed to destroy weapons or dismantle key facilities. Furthermore, nuclear weapons — and the materials to make them — are undoubtedly hidden at secret sites throughout North Korea that are unknown to the US and its allies. Taking more substantive steps towards denuclearization will come at a high price, far higher than 1994’s Agreed Framework that promised North Korean denuclearization in exchange for light water reactors (that were never built) and heavy fuel shipments (that were often late). This announcement indicates a willingness by Kim to explore denuclearization in exchange for better economic conditions. But it won’t be easy to convince him to give up the missile program that has arguably gotten him to this point, unless there are substantial incentives to do so.