The U.S. Air Force arrived in South Korea Saturday and plans to participate in a joint aerial drill this week in South Korea. The drill is known as “Vigilant Ace” and it comes just a week after North Korea launched its most destructive ballistic missile. For more on the story here is Zachary Devita.

A nuclear war on the Korean Peninsula is inevitable because of threatening military drills by South Korea and the United States, North Korea's foreign ministry said in comments carried by the...