What is the point of view of geostrategic theory

The strategic idea of the great power game. The viewpoint of geostrategic theory is the strategic thought of the great power game. It is where the fundamental interests are fought and contested in various geographic locations. There is a heart, the edge of the difference. Now the theory, the former western Soviet Union, Eastern Europe is the heart of the belt. The United States is now utilizing Japan, Singapore, Israel, Western Europe is the edge of the belt, is two ways to fight.