What function do borders perform in acting as demarcations between countries, but more importantly, as a line between Universal Declaration of Human Rights set down by the United Nations

What function do borders perform in acting as demarcations between countries, but more importantly, as a line between Universal Declaration of Human Rights set down by the United Nations
-(https://www.un.org/en/about-us/universal-declaration-of-human-rights) and the particular rights of a citizen of a given sovereign nation-state. The irony here is that frequently citizens rights are based on or derived from what we consider to be Universal Human Rights. How do borders play a role in creating the tensions between these two conceptions of rights?

Last Completed Projects