<P>At the height of the Cold War in 1954, President Eisenhower inaugurated a program of cultural exchange that sent American dancers and other artists to political «hot spots» overseas. This peacetime gambit by a warrior hero was a resounding success.</P><P>Among the artists chosen for international duty were Jos&#233; Lim&#243;n, who led his company on the first government-sponsored tour of South America; Martha Graham, whose famed...