More On North Atlantic Treaty Organization - NATO

Turkey was barred from the F-35 program after it decided to purchase the Russian S-400 missile.

Afghan ground controllers lack the ability to coordinate attack missions by the Afghan Air Force, according to the IG.

Incirlik has played a key role in air operations against the Islamic State in Iraq and Syria.

The U.S. Defense Department has given Turkey one last chance to cancel its planned order of the Russian-made S-400.

Air Force Research Labs is looking to make military radios interoperable.

"As NATO moves beyond its 70th anniversary, there are four issues that it needs to address."

The THAAD will integrate into the existing NATO Ballistic Missile Defense system, U.S. European Command announced.

Deliveries of F-35As for the Turkish pilot training program continue, despite the halt of equipment shipments to Turkey.

Turkey's commitment to acquiring Russia's S-400 anti-air system is unacceptable, Air Force Lt. Gen. Tod Wolters said.

The U.S. has halted shipments after the NATO ally refused to back down from its intent to purchase the Russian-made S-400.