Native American protesters have been demonstrating against Columbus Day in Seattle for several years. Protest organizers say Columbus should not be credited with discovering the Western Hemisphere at a time when it was already inhabited. Elaine Thompson/AP hide caption

itoggle caption Elaine Thompson/AP

Paul Pillar (right), a former national intelligence officer, with teammate Aaron David Miller, argues that the U.S. should have a smaller military footprint in the Middle East. Samuel LaHoz/Intelligence Squared U.S. hide caption

itoggle caption Samuel LaHoz/Intelligence Squared U.S.