By Amanda Eckerson John Gaddis, world famous Yale historian on the Cold War, has a thing for foreign leaders. A big thing. By the semester’s end of his oh-so-sought-after undergraduate class, his propensity to talk about Mao’s interest in cigar smoking, or Gorbachev’s anxiety about public appearances, leaves students 1) entertained and 2) concluding that the cult of personality was the single most important factor in the Cold War. Oliver Stone’s film “South of the Border” is reminiscent of Gaddis’s [...]