Of the decisions made by world leaders, the most crucial are those affecting war and peace. Many voters were wary of Donald Trump's sense of judgment on these matters, illustrated by his "shoot from the hip" style. Upon his election, wariness of Trump's judgment increased with his reckless talk about ripping up the Iran nuclear deal that was ratified by six nations, including the U.S. His reckless talk escalated, threatening North Korea with total destruction.