The 2001 law that authorized the U.S. war against al-Qaeda and its affiliates is not an appropriate justification for the offensive against ISIS and other emerging terrorist groups, says CFR’s John B…

At a crucial moment for Ukraine and its economic viability, the EU and United States should join efforts with Russia to try to stabilize the country, says veteran journalist Serge Schmemann.

Whether NSA leaker Edward Snowden is extradited to the United States will hinge more on diplomatic relations than international legal considerations, says expert Stephen Vladeck.

As concerns grow over Afghanistan’s ability to govern, USAID’s J. Alexander Thier discusses development successes and challenges, singling out infrastructure and energy as critical areas for investme…

President Obama’s decision to intervene in Libya is hobbled by poor timing and muddled objectives, but charges that the war is illegal are unfounded, says CFR’s James Lindsay.