U.S intelligence shows there could be a North Korean nuclear test, or a long-range missile test, or both, before, during or after President Joe Biden's trip to South Korea and Japan starting this week, said U.S. national security adviser Jake Sullivan. #News #Reuters #NorthKorea #U.S. #Japan Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en