sentences:  The Bush Doctrine, in line with long-standing neoconservative ideas, held that the United States is entangled in a global war of ideas between the western values of freedom on the one hand, and extremism seeking to destroy them on the other; a war of ideology where the United States must take responsibility for security and show leadership in the world by actively seeking out the enemies and also change those countries who are supporting enemies.The Bush Doctrine, and neoconservative reasoning, held that containment of the enemy as under the Realpolitik of Reagan did not work, and that the enemy of United States must be destroyed pre-emptively before they attack—using all the United States' available means, resources and influences to do so.On the book "Winning the War on Terror" Dr. James Forest, U.S. Military Academy Combating Terrorism Center at West Point, comments