The Grand Chessboard: American Primacy and Its Geostrategic Imperatives is one of the major works of Zbigniew Brzezinski.
Regarding the landmass of Eurasia as the center of global power, Brzezinski sets out to formulate a Eurasian geostrategy for the United States. In particular, he writes, it is imperative that no Eurasian challenger should emerge capable of dominating Eurasia and thus also of challenging America's global pre-eminence.