Russia continues to move through Ukraine. Clayton Neville has the latest in our Correspondent Close-Up. We'll also get the latest on fuel prices with John Stolnis. Dan Lamothe of the Washington Post will tell us about Americans heading over to Ukraine to help them defend their country. And Eric Berger of Ars Technica joins us to tell us about the state of the International Space Station, one that contains both Americans and Russians.

See omnystudio.com/listener for privacy information.