2)the subject of security is no longer confined to nation states It extends to individuals, groups, institutions, society and even the whole world. Human security is the most essential and fundamental. Security is indivisible. If most developing countries cannot guarantee their security, it is hard for the world to be peaceful. No country is encouraged to promote its own security at the cost of the insecurity of other countries2) the subject of security is no longer confined to nation￾states. It extends to individuals, groups, institutions, society and even the whole world. Human security is the most essential and fundamental. Security is indivisible. If most developing countries cannot guarantee their security, it is hard for the world to be peaceful. No country is encouraged to promote its own security at the cost of the insecurity of other countries