United States Chairman of the Joint Chiefs of Staff General Dan Caine and his South Korean counterpart flew in fighter jets to demonstrate allied air power to North Korea.

The joint commanders' flight, the first of its kind in the alliance's 72-year history, was part of Caine's visit to South Korea , where he and local military leaders discussed North Korea 's advanced nuclear and missile threats and the global arms competition.

Newsweek has contacted North Korea's embassy in Beijing for comment via email.

Why It Matters

The U.S.-South Korea alliance was established under a mutual defense treaty signed in 1953 after the Korean War. In addition to approximately 28,500 troops stationed in the southern Korean Peninsula , the U.S. is committed to using its full range of military cap

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