China's traditional approach to security questions appears to be antithetical to the cooperative security approach that has been adopted by ASEAN and by embryonic multilateral organizations such as the ASEAN Regional Forum. Yet, in the course of normalizing relations with India, China has shown itself willing to explore the kind of confidence-and security-building measures associated with this approach. Although it was a change in interests that prompted China to explore the worth of such measures, nevertheless cooperative security ideas have proved helpful in defusing tensions between New Delhi and Beijing. Possibly as a result of its experience with India, there are indications that China has become more receptive to the use of a cooperative security framework elsewhere in the Asia-Pacific, most notably in dealing with the ASEAN Regional Forum. Its involvement in this process has increased the diplomatic and economic costs that would be incurred should it decide to use force to make good its irredentist claims in the South China Sea.