The U.S. has made a "substantial proposal" to Russia aimed at securing the release of WNBA star Brittney Griner and former U.S. Marine Paul Whelan, Secretary of State Antony Blinken said Wednesday. The U.S. has not said who it was willing to trade, but Russia has long sought the release of Viktor Bout. Caitlin Huey-Burns has more details. #BrittneyGriner #PaulWhelan #News "CBS Evening News with Norah O'Donnell" delivers the latest news and original reporting, and goes beyond the headlines with context and depth. Catch the "CBS Evening News" weeknights at 6:30 p.m. ET on the CBS Television Network and at 10 p.m. ET on the CBS News app. Subscribe to the "CBS Evening News" YouTube channel: https://bit.ly/1S7Dhik Watch full episodes of "CBS Evening News": https://cbsn.ws/23XekKA Follow "CBS Evening News" on Instagram: https://bit.ly/1T8icTO Like "CBS Evening News" on Facebook: https://on.fb.me/1KxYobb Follow "CBS Evening News" on Twitter: https://bit.ly/1O3dTTe Download the CBS News app: https://cbsn.ws/1Xb1WC8 Try Paramount+ free: https://bit.ly/2OiW1kZ For video licensing inquiries, contact: [email protected]