As the DPRK renews attack on Donald Trump by calling him "dotard," is the DPRK still willing to talk with the U.S.? And a new satellite image obtained by CNN indicates that the DPRK may be preparing to resume testing engines used to power satellite launchers and intercontinental ballistic missiles at a site that was dismantled after the Singapore summit. If that's true, how will it affect the denuclearization process? Asia Today speaks to Zhao Tong, a senior fellow with the Carnegie's Nuclear Policy Program, for his analysis.