An attack by an alleged Islamic State member in Syria has killed two U.S. service members and one American civilian.

The new volunteer army, structured by the country's transitional authorities, has struggled to integrate the various military factions that have emerged from the conflict during Bashar al-Assad's dictatorship.

The killing of three Americans during what was said to be a counterterrorism operation in central Syria served as a reminder that U.S. troops are still operating in the country.

The Palmyra attack on US forces resulted in the deaths of two American soldiers, prompting a vow of retaliation from the White House

Wearing a Syrian military uniform and a US army cap, a security officer perched on top of a pickup mounted with machineguns, on the lookout for any suspicious movement. Kicking up a cloud of orange dust that briefly turned the barren landscape into a ...

A US raid in Syria meant to capture an IS official mistakenly killed an undercover informant, who had been helping track extremist activity. The incident has raised concerns over flawed intelligence and the need for stronger coordination between Washington and Syria's interim government.

HASSAKEH, Syria (AP) — The Syrian government and the main Kurdish-led force in the country’s northeast have agreed in principle on a plan to merge the U.S.-backed force as a cohesive group into the national army, Syria’s main Kurdish commander said ...

The killing underscores the complex political and security landscape as the U.S. begins working with Syria’s interim president in the fight against remnants of IS.