In what ways did George W. Bush’s foreign policies and view of the role the United States should play in the world affect the nation’s involvement in the Middle East following the 9-11 attacks?

In what ways did George W. Bush’s foreign policies and view of the role the United States should play in the world affect the nation’s involvement in the Middle East following the 9-11 attacks? When should the United States get involved with another country’s problems? Explain in 200-300 words with one reference.