Historian analyzes devolving relations between U.S. and Ukraine after Oval Office spat

President Trump and Ukrainian President Zelenskyy argued in the Oval Office in a stunning public display of devolving relations. Geoff Bennett discussed the developments with Timothy Snyder, one of the country's leading historians of Eastern Europe and the former Soviet Union who has written widely on Ukraine, Russia and the war. PBS News is supported by - https://www.pbs.org/newshour/about/funders