The fateful blunder that radically altered the course of the twentieth century—and led to some of the most murderous dictators in historyPresident Woodrow Wilson famously rallied the United States to enter World War I by saying the nation had a duty to make “the world safe for democracy.” But as historian Jim Powell demonstrates in this shocking reappraisal, Wilson actually made a horrible blunder by committing the United States to fight. Far from making the world safe for democracy, America’s entry into the war opened the door to murderous tyrants and Communist rulers. No other president has had a hand—however unintentional—in so much destruction. That’s why, Powell declares, “Wilson surely ranks as the worst president in American history.