To the risks we already face from the 59 or so wars in the world right now, one may be added that exacerbates them all: America's retreat. When Donald Trump calls Biden crazy for bombing the Houthis, he touches a sensitive nerve in American public opinion, both on the right and the left. The Founding Fathers of the American Republic had turned their backs on Europe by vowing not to get involved in its religious wars. Today, many may harbor the same sentiment toward the secular feuds between Shiites and Sunnis. The isolationist right and pacifist left wanted to stay out of World War I and World War II, abandoning Europe to the Reich or the Hitler-Stalin duo. Today, some right-wing people wonder why helping Ukraine defend its borders if streams of drugs and waves of illegal immigrants pass through the U.S.-Mexico border. Many left-wing people hate an expression like "world gendarme" and wish for an illusory peace created only by the UN. An America that folds in on itself would leave gaps that no one else can fill. Or has the will to fill, in the case of the Europeans. In this sense, what is happening in the Red Sea is likely to be a small taste of the world to come. Instead, small nations, dependent on foreign trade as European states are, are among the most unprepared to survive this scenario.