[contentcards url=”https://www.upi.com/Top_News/World-News/2022/12/20/US-South-Korea-air-drills-B-52-F-22-North-Korea-missile/1131671532449/” target=”_blank”] By Thomas Maresca SEOUL, Dec. 20 (UPI) — The United States and South Korea conducted joint air drills on Tuesday involving American B-52 bombers…