The regional security environment is rapidly changing. Where once, we looked chiefly to territorial disputes between states, we are now aware of the many other ways in which security may be threatened. These include concerns over environmental degradation, access to fresh water, drug and arms trafficking, terrorism, and issues of governance and corruption. The countries of our region are affected by many of these problems, but they have also begun to cooperate on issues of security concern through bodies such as ASEAN. This course examines the many challenges to regional security, and the responses to them.