Nicholas Spykman's Rimland Theory suggests that the coastal fringes of Eurasia, known as the Rimland, are crucial for global power. Spykman argued that this area, which includes parts of Western Europe, the Middle East, and East Asia, serves as a buffer zone between the sea and the interior landmasses. Control of the Rimland would allow a nation to dominate the world. According to Spykman, the nation that controls the Rimland can influence the balance of power in the world. This theory emphasizes the importance of geography in international relations, highlighting how access to the sea and strategic locations can determine a country's strength and security.