Leaders from the U.S., Britain and France spoke out against Syria for using chemical weapons in an attack in early April. Watch this video to learn about chemical weapons and why they're illegal.
The precision U.S., French and U.K. missile strikes against Syrian chemical weapons facilities struck all their military targets while avoiding unnecessary risk to civilians.
Watch the U.S. ambassador to Russia talk about the recent allied strike in Syria — a response to a chemical weapons attack that killed more than 40 people.
The U.S. and allies are weighing their response to a chemical attack in the town of Douma, Syria, that they believe was perpetrated by the Assad regime.
The world relies on skilled international inspectors with sophisticated equipment to determine whether countries are fulfilling their obligations not to build nuclear or chemical weapons.
People of Iran are telling their government they need better economic opportunities and more responsive governance. That's not the government's focus.
The Assad regime in Syria is suspected of several chemical attacks against rebels and civilians. Thirty nations are partnering to bring the perpetrators to justice.
Rex Tillerson highlighted U.S. alliances in a weeklong trip to Europe. Here are the highlights from London, Paris, Davos and Warsaw.
U.S. Secretary of State Rex Tillerson offers five goals to end the conflict in Syria in a speech at Stanford University in California.