Largest post-Soviet prisoner swap with US frees 24 people

The United States and Russia have completed a 24-person prisoner swap, the largest in post-Soviet history, with Moscow releasing journalist Evan Gershkovich and fellow American Paul Whelan in a multinational deal. We talk with Hoover Fellow Sergey Sanovich from Stanford University. At least three protesters were killed in Nigeria's Kaduna state on Thursday. And weed-killing robots roll through farms.