New submitter dcmcilrath sends this quote from the NY Times:
"The Pentagon will spend $1 billion to deploy additional ballistic missile interceptors along the Pacific Coast to counter the growing reach of North Korea's weapons, a decision accelerated by Pyongyang's recent belligerence and indications that Kim Jong-un, the North Korean leader, is resisting China's efforts to restrain him. ... The missiles have a mixed record in testing, hitting dummy targets just 50 percent of the time, but officials said Friday’s announcement was intended not merely to present a credible deterrence to the North’s limited intercontinental ballistic missile arsenal. They said it is also meant to show South Korea and Japan that the United States is willing to commit resources to deterring the North and, at the same time, warn Beijing that it must restrain its ally or face an expanding American military focus on Asia."