Last month, China released its white paper on national defense, the eighth since Beijing began releasing the document in 1998. The white paper is invariably an exercise in frustration: China's detractors are always disappointed by the document, unsatisfied with its contents and the many questions it leaves unanswered.

The Chinese government adopts an aggrieved tone in responses to questions that highlight its flaws rather than acknowledging the distance Beijing has traveled since it began the white paper process.

Defense white papers are intended to offer insight into a government's security and defense policies. They provide transparency about planning and purposes by facilitating the understanding of the mind-set that guides national defense policy and identifying threats and challenges, and the specific measures taken to address them.