"In his new book, David Reynolds argues that the period from 1938 to 1941 was a turning point in modern American history. Drawing upon his own research and the latest scholarship, Mr. Reynolds shows how Franklin Roosevelt led Americans into a new global perspective on foreign policy, one based on geopolitics and ideology. FDR insisted that in an age of airpower, U.S. security required allies far beyond those in the Western Hemisphere, and that in an era of dictatorships, American values could and should transform world politics."--BOOK JACKET.