Wow. The article cites one person, Admiral Willard. There are also undocumented assertions: "The US questions China's nearly 20 years of annual double-digit percentage increases in its defense budget." Which part of the US government? Anyone in particular? No context: China's defense budget is nowhere close to that of the United States. No EVIDENCE is presented for the risk of a "limited" arms race. A quote from a Japanese or Chinese official would have been helpful on this question. Moreover, note that the title of the article removed the word "limited" from the quote from the Admiral, and given the lack of any other sources in the article arguing that NK's behavior was sparking an arms race, the title's accuracy is questionable at best (the difference between a limited arms race and an arms race actually means something in the IR literature).