The present book examines the national security strategies of the presidents of the United States of America after World War II. The main question that has been asked in this regard is what approaches have these national security strategies had after the World War II? The present project is an analytical descriptive study done through interviews and library sources. Research shows that each of the American presidents had a national strategy in the aftermath of World War II, and in the post-World War II period, the US National Security Strategy has always had a global approach.