March 27, 2022 CBS News Sunday Morning : Season 44 Episode 28

David Martin looks back at the Kremlin's earlier quagmire in Afghanistan and how it relates to Ukraine, while Christina Ruffini visits the studios of Radio Free Europe/Radio Liberty. Plus: Seth Doane talks to a Russian oligarch critical of sanctions; Tracy Smith delves into the making of "The Godfather"; David Pogue examines one of Hollywood's most innovative directors, Buster Keaton; Lee Cowan reports on the controversy of trans athletes in sports; Kristine Johnson attends a museum exhibition curated by security guards; David Edelstein offers his Oscars predictions; and Faith Salie visits a sparkling exhibit of gems at the American Museum of Natural History.