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.
During this transition period between secretaries of state, a steady hand takes charge and career employees continue their work supporting the president's foreign policies.
No country welcomes more foreign companies than the United States. They create nearly 7 million jobs. But the U.S. also seeks to ensure foreign countries don't get hold of technology that threatens national security.
Saudi Crown Prince Mohammed bin Salman has crisscrossed America on a trip showcasing the closeness of U.S.-Saudi economic and security ties.
A future U.S. Navy warship will have a touch of Australia. It will be named USS Canberra to honor close U.S. ties with Australia.
The world banned chemical warfare nearly a century ago, but nerve agents like the one used on a British citizen show the horror has not disappeared. Learn more about these colorless liquids and gases that can cause a victim to suffer a painful death.
Standing in solidarity with NATO partners, the U.S. ordered five dozen Russian diplomats and intelligence operatives to leave the country following the nerve agent attack in England.
President Trump signed an order proposing increased tariffs on designated Chinese imports to address unfair trade practices that threaten U.S. intellectual property rights.