As the U.S. military formally ends operations in Iraq, four top expert voices in the debate on the war differ over whether it merited the cost in blood, treasure, and U.S. credibility.

Experts from three countries offer their views about the role foreign policy might play in U.S. political conventions and what interest there is from the perspective of their countries.

Osama bin Laden’s death is a real and symbolic blow to al-Qaeda, and its stature in the Middle East is already diminished by the pro-democracy movements in the region, but the group remains lethal. S…

With some findings of the UN’s Intergovernmental Panel on Climate Change in question, four experts debate how much the premier climate science review panel may need to make changes.

North Korea’s nuclear test raises new concerns about its nuclear capabilities, regime succession, and the limits of both international pressure and engagement. Four experts address the policy options…