"To those groups who are betting on the Americans, we say the Americans will not protect you," Syrian President Bashar al-Assad said.
The American captured is reportedly only 16 years old.
The Syrian rebels once backed by the U.S. under former President Barack Obama now pose the greatest threat to Kurdish allies opposed by Turkey.
A former West Point cadet who left the U.S. to join Kurdish militia groups fighting Syrian ISIS forces was interrogated by police at a Chicago hospital.
Trump "has done more to isolate North Korea & defeat ISIS in 8 months than Obama did in 8 years," the president's press secretary tweeted.
Erdogan was speaking near Times Square when pro-Kurdish protesters got into a scuffle with men in suits.
The former Trump campaign chairman remains at the center of investigations into Russian meddling in the 2016 election.
Iraq has separated female foreign fighters and detained them at a facility near Mosul.
Ahead of Congress vote, Senator Rand Paul says the U.S. government wants "unlimited war" without a legal basis.
Middle East Christians have never taken up arms against America anywhere in the region.
The former diplomat says the U.S. must rail against Iranian domination in the Middle East.
An ISIS suspect recounts murders and rape in court testimony.
Iraqi forces are preparing an offensive on ISIS-held Tal Afar, where the group has some 2,000 fighters.
Fox News only issued an "update" to the segment that angered the newspaper, which demanded an on-air apology.
The newspaper is seeking an apology as Trump's claim the paper leaked information becomes his latest attack on the press.
The deployment of women for suicide attacks shows not only the end of ISIS's "gender binary," but its state project.
There has only been one reported instance of a chemical weapons attack this year, new analysis shows.
Iraqi paramilitaries announce the liberation of a key ISIS stronghold.
The warning came a week before Turkey's president is due to visit Washington.
Authorities said explosives in a tunnel causes the blast in the city of Diyarbakir, killing a police officer and two civilians.
Ten of the jihadi group's militants used a police vehicle to infiltrate the hometown of Saddam Hussein.
Amal Clooney demands the global body provide accountability for victims of the militant group's crimes.