U.S. Secret Service aware of Iranian video threat against Barron Trump

WASHINGTON, Aug 25 (Reuters) - The U.S. Secret Service is aware of a video broadcast by Iranian state television discussing a potential plot to assassinate U.S. President Donald Trump's youngest son, a spokesperson said on Tuesday. "The U.S. Secret Service is aware of the video and investigates anything that can be perceived as a threat toward our protectees. Out of concern for operational security, we do not discuss matters of protective intelligence," Secret Service spokesperson Nate Herring…