February 21: President Biden’s National Security Adviser on the Ukraine crisis. Rollercoaster weather across the U.S. Queen Elizabeth tests positive for Covid. School officials investigating brawl after Wisconsin and Michigan basketball game.

<p>Tom Llamas and Sheinelle Jones speak with Jake Sullivan, President Biden’s national security adviser, on the Ukraine crisis. Plus, Al Roker is tracking rollercoaster-like temperatures across the U.S. and a new round of storms. Also, the latest on how Queen Elizabeth is feeling after testing positive for Covid. And, school officials are now investigating a massive brawl involving Juwan Howard at the end of a Michigan and Wisconsin basketball game.</p>