That is the populist Trump speaking. I hope he doesn't talk himself into a war in Syria, with our forces being in harms way for a hopeless cause, as sorry as that is to say for those people.I agree, NK is an actual threat and has made threats to the US.
By Trump's own logic (re: his comments about Obama being responsible for the chemical attack in Syria), if Trump doesnt back up his threats he will be putting people at risk and setting the US back a long way.