Any external military intervention in Syria in response to government use of chemical weapons will require persuasive arguments to prove legitimacy, says CFR’s Matthew Waxman.

The European Union’s embargo on Iranian oil may bring Iran to the negotiating table but is unlikely to halt its controversial nuclear program, says CFR’s Matthew Kroenig.

Secretary of State John Kerry said the United States will hold the Syrian government accountable for the use of chemical weapons on civilians. CFR’s Matthew C. Waxman highlights three sets of conside…

A leaked government document has recharged the controversy over the use of lethal force against U.S. citizens. CFR’s Matthew C. Waxman highlights three legal considerations.