welcome back to "velshi and ruhle." here are the top stories we're watching right now. shows of force. the u.s. military flew bombers and fighter jets over the south korean peninsula today in joint exercises with south korea and japan. china and russia began drills in the region ahead of the u.n. general assembly meeting. north korea is set to be a focal point for lead ergs ers at the this week. in st. louis, more than 80 people were arrested after a third night of protests that turned violent. demonstrations began in response to friday's acquittal of a police officer who shot and killed an african-american man in 2011. two suspects are in custody after friday'ster torre ter to a london tube. they're 18 and 21-year-old men. the terrorism threat level was