Discuss the theories of realism, liberalism, Marxism and how each is connected to the U.S invasion o f iraq in 2003

U.S Invasion Of Iraq 2003 Linked To One Of The 3 Major Theories In International Relations ( Realism , Marxism Or Liberalism)

Combining theory and practice of international relations and conflicts, you are required to focus on one major IR theory (e.g.: realism, liberalism, Marxism ) like one of those theories to the event ( U.S invasion o f iraq in 2003 )  write a 2 pages essay about how is the theory connected to the event.