Australia has claimed that the Chinese navy ships conducting live-fire exercise in international waters near Australia last week failed to provide adequate prior warning of the exercise, which Australia says forced them to divert dozens of commercial flights over the area. The Chinese Defense Ministry and the Chinese Embassy to Australia say the exercise complied with international law and did not affect aviation safety. What more do we know about the Chinese navy drills? Were any international laws violated? What does the incident reveal concerning the relationship between China and Australia?