Humanities Homework Help

I’m working on a sociology question and need an explanation to help me learn.

There are three main theories of world politics. Each of these theories espouses a different world view. Compare and contrast the realist, liberal (idealist), and constructivist viewpoints of global politics. Be detailed and specific (minimum of 150 words).
B. Imagine you are president of the United States. You come into the office of the presidency with your own world view based on your own perceptions and motivations. As president you now have the responsibility of protecting the integrity of the national security of the United States. Choose one of the theories of world politics and explain how your chosen theory is the best one to secure the national security of the United States (minimum of 150 words).