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.

Four global experts assess Dr. Jim Yong Kim’s appointment as World Bank president and whether the institution needs governance reform.

Four experts discuss what the U.S. options are for addressing the Syria crisis, with suggestions ranging from avoiding direct actions to enforcing a Libya-style no-fly zone.

Afghanistan’s presidential election could be a democratic milestone, or may be marred by insurgent violence and fraud. Four experts weigh the election’s importance.