Four experts contribute their thoughts about the role of the United Nations and the future of global governance in this Expert Roundup.

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.

The new Pentagon strategic plan calls for a more mobile, modern U.S. military capable of meeting threats posed by non-state actors like al-Qaeda. Cfr.org inteviews four military experts for their vie…