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.

With the U.S. Senate set to consider ratification of President Obama’s new nuclear nonproliferation strategy, four experts assess the strengths and weaknesses of the New START agreement.

In his address to the nation on Tuesday, U.S. President Barack Obama laid out a strategy he says will turn the tides in the faltering Afghan war effort. Five experts analyze his approach.

Ahead of President Obama’s Asia trip, CFR experts Sheila Smith, Joshua Kurlantzick, Elizabeth Economy, and Scott Snyder discuss what the president should focus on during his visit to Japan, Singapore…

Afghanistan faces a critical year as NATO-led troops draw down, international aid drops, and elections could deliver the country’s first democratic transfer of power. Five experts weigh Afghanistan’s…