With the decertification of the Iran Deal and tensions with North Korea bubbling over, is the world closer to nuclear war under President Trump than under any of his predecessors?
WATCH: Is the world closer to a nuclear war in the Trump era?
U.S. President Donald Trump delivers a speech at the National Assembly in Seoul, South Korea, Wednesday, Nov. 8, 2017. President Trump delivered a sharp warning to North Korean leader Kim Jong Un on Wednesday, telling him the weapons he's acquiring "are not making you safer. They are putting your regime in grave danger." (AP Photo/Lee Jin-man, Pool)