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.

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.

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.

With the UN climate meeting in Doha under way, five experts discuss what needs to happen to advance a comprehensive global climate policy.

U.S. military leaders are calling for more troops to carry out U.S. counterinsurgency strategy in Afghanistan. Six analysts offer views on how President Barack Obama should respond.