... List, and variousgeopoliticians, beginning with Admiral Mahan in the final decade of the 1800s, continuing with Halford Mackinder and Nicholas Spykmanduring the middle of the twentieth century, and ... upheavals of the 1960s had their origins in the extension of American national interest to all parts of the globeduring the 1940s and 1950s, as well as the growth of higher education. The expansion of ... and ending with ColinGray in the 1990s. After World War II, new theories were offered byMorgenthau, Aron, Waltz, and others. Most recently, in the wake of the Cold War s end, these theories...