Lester Milbrath suggests that if all societies chose to live in peace, that could happen. However, if one becomes powerful and choses war, then all the others must either choose war too, prepare for war, submit to the powerful, or ___. That's why the most peaceful societies today are found in the most remote places on planet earth.

Peace studies is an interdisciplinary academic field that draws on political science, sociology, history, anthropology, theology, psychology, philosophy, and other fields to:

understand the causes of armed conflict;
develop ways to prevent and resolve war, genocide, terrorism, gross violations of human rights; and
build peaceful and just systems and societies.