MX, GLCM, and Pershing II were all built because of perceived need to update the nuclear arsenal to match -- frankly insane levels of Soviet defense spending in the late 60s and 70s. The western European allies demanded that we build the latter two and then when the Soviet's applied pressure through the Left in those countries, it took a ton of political will to deploy them.
China...man. The game is so different with them. They built up as a powerhouse of industry and workshop of the World and now they are determined to become some bizonkers hermit kingdom like North Korea.