For over a century—since the Open Door policy and Theodore Roosevelt’s mediation of the Russo-Japanese War—it has been a fixed American policy to prevent hegemony in Asia. Under contemporary conditions, it is an inevitable policy in China to keep potentially adversarial forces as far from its borders as possible. The two countries navigate in that space. The preservation of peace depends on the restraint with which they pursue their objectives and on their ability to ensure that competition remains political and diplomatic.