Discuss Thomas Barnett's Great Powers: America and the World After Bush

National security expert Thomas Barnett speaks with U.S. News about his latest book.

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In his new book Great Powers: America and the World After Bush, national security expert Thomas Barnett argues that America's grand strategy is off kilter from globalization's current trajectory and needs to be dramatically revamped. During the Bush administration, America was paranoid and belligerent, he adds, sowing damaging seeds of uncertainty across the global economic system. Barnett spoke recently with U.S. News about the Bush administration's errors and offered a prescription for getting America back on track. Join the discussion below.