More On Allied Nations

President Donald Trump questioned the fairness of a decades-old defense agreement between the U.S. and Japan.

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

"NORAD is responding toemerging threats by transforming how we defend our nations, sharpening our focus."

Norway now has 12 F-35A fighters and will grow its inventory to 15 by September.

A Marine Corps F-35B squadron will make history by deploying aboard the British Royal Navy's newest carrier.

Aircrews and aircraft from the U.S., South Korea and Australia are participating in a new exercise on the Korean Peninsula.

"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.