Sunday on PBS News Weekend, the search for victims in Texas Hill Country is interrupted by heavy rain and renewed threat of flash flooding. How Russia used Brazil as a launchpad for Putin’s deep-cover operatives around the world. A look at the controversy around the “Alligator Alcatraz” detention center in Florida. Plus, why some of the world’s most populous cities are slowly sinking. PBS News is supported by - https://www.pbs.org/newshour/about/funders