ABC News' Patrick Reevell has the latest on the proposed prisoner swap to bring back Brittney Griner and Paul Whelan and the new developments with Ukrainian grain exports. SUBSCRIBE to ABC News on YouTube: https://bit.ly/2vZb6yP Latest updates: http://abcnews.go.com/ Watch FULL EPISODES on Hulu: http://abcn.ws/3bzvQQn #abcnews #abcnlupdate #brittneygriner #paulwhelan #russia #prisonerswap