Turkey is willing to purchase U.S.-made Patriot air defense systems but will not dispose of its Russian S-400 system.
According to U.S. government sources, Erdogan has warned the U.S. against removing the nuclear devices from Incirlik.
Roebuck's memo highlights how Trump's decision to withdraw American troops was deeply divisive.
An official identified her as Asma Fawzi Muhammad al-Qubaysi and said she was al Baghdadi's first wife.
The Turkish official said the 65-year-old known as Rasmiya Awad is suspected of being affiliated with the extremist group.
Turkey started patrols with Russia in northern Syria to verify whether Kurdish forces have withdrawn from a border zone.
The Defense Department believes that Turkey's S-400 surface-to-air missile system will soon be ready to track aircraft in the...
The new Russian troops sent in further underscore how the situation on the ground in Syria has dramatically changed.
The fighting underscored the risks of violence as multiple armed forces jostle for new positions in tight quarters.
Esper said Turkey is heading in the wrong direction, spinning closer to Russia.