What are the absence of national identity and integration on national security and democratic governance in the world?

A nation state is a state in which the great majority shares the same culture and is conscious of it. The nation state is an ideal in which cultural boundaries match up with political ones.[1] According to one definition, "a nation state is a sovereign state of which most of its subjects are united also by factors which defined a nation such as language or common descent."[2] It is a more precise concept than "country", since a country does not need to have a predominant ethnic group.

A nation, in the sense of a common ethnicity, may include a diaspora or refugees who live outside the nation-state; some nations of this sense do not have a state where that ethnicity predominates