minister shinzo abe warned there is a possibility north korea is already capable of shooting missiles with sarin gas as warheads. there is no more serious threat in the world by the way facing trump today. what does his reaction say about what kind of commander in chief he is? christopher hill is a former u.s. ambassador to south korea and former assistant secretary of state for east asia. he's in seoul, south korea right now. john palm fret is the former beijing bureau chief for "the washington post." max bacchus is a former u.s. senator and former ambassador to china. and kelly mag za men is a former senior pentagon official in charge of asia in the obama administration. let me start with ambassador hill over there. what are the options? let's start with the options of our president, president trump. what can he do to shake kim jong-un off the course of going to an active nuclear power for lack of a better phrase?