Hoover Institution scholar Fouad Ajami describes in this essay how a more active policy by the Obama administration could have prevented the chaotic situation in the Middle East, the sectarian conflict, the breakup of Syria and Iraq, the increase in terrorism eventually affecting France and the U.S., and the refugee crisis in Europe. This active policy he says would have included- keeping some presence in Iraq, and taking action to prevent the spread of the conflict by restraining regional and foreign powers and terrorism.