American troops will be out of Iraq in just three weeks, leaving the world's largest embassy and an uncertain legacy. We hear some disturbing assessments of what the future might bring. Also, US-Iranian tensions over drone continue to escalate, and thousands of physicists wait for news of the "God Particle."
Banner image: US Army soldiers carry their bags to shipping containers as they prepare to leave Camp Adder on December 6, 2011 at Camp Adder, near Nasiriyah, Iraq. Photo by Joe Raedle/Getty Images