THE HAGUE, Netherlands (AP) — U.S. President Donald Trump on Wednesday wrapped up participation in the annual NATO summit facing an alliance that had largely bent to his will.

If Ukraine joins NATO in the middle of the war, then Russia is at war with the entire NATO alliance. At the core of this conundrum is Article 5. Here's a closer look at what that means.

Trump frequently chastised NATO countries for not spending enough on defense and demanded that they contribute more to the alliance.

European allies should strengthen NATO’s Indo-Pacific ties as Washington wavers.