1. The United States' interaction with the rest of the world has dramatically changed over time. The overall policy started as isolationism and ultimately changed to internationalism. Provide a brief description of the two policies.
2. Define the terms multilateralism, preemptive war doctrine, and unilateralism, relating each to U.S. policy.
3. Discuss the economic dimension of national security policy, defining the terms globalization and free trade.
NB. the answers to the above question should be three pages in total excluding reference page. kindly provide your valid reference for each answer.