“A modernization program focused on naval and missile forces has shifted the balance of power in the Pacific in ways the United States and its allies are only beginning to digest. While China lags in projecting firepower on a global scale, it can now challenge American military supremacy in the places that matter most to it: the waters around Taiwan and in the disputed South China Sea. That means a growing section of the Pacific Ocean — where the United States has operated unchallenged since the naval battles of World War II — is once again contested territory, with Chinese warships and aircraft regularly bumping up against those of the United States and its allies.”
Source: With Ships and Missiles, China Is Ready to Challenge U.S. Navy in Pacific – The New York Times