WASHINGTON - The Obama administration says it is "outraged" by a Syrian mortar shell that landed on a home in Turkey, killing at least three people.
Secretary of State Hillary Rodham Clinton says the U.S. is consulting its NATO ally on what she termed a "very dangerous situation."
She plans to speak to Turkish Foreign Minister Ahmet Davutoglu later Wednesday.
Among the dead was a 6-year-old boy. Turkish state media reported angry townspeople marching to the local mayor's office to protest the deaths.
Speaking in Washington, Clinton said Syria's leaders were causing untold suffering to their own people, driven solely by their desire to cling to power.
She said responsible nations worldwide must band together to pressure Syria's government into a cease-fire and a political transition.