President Trump is holding calls with Ukrainian President Zelenskyy and other European leaders today. The meetings coming ahead of Trump's summit with Russia President Putin in Alaska on Friday. NBC News' Yamiche Alcindor and Matt Bodner report the latest updates. Former Deputy Secretary of State Amb. Wendy Sherman and former CIA Chief of Operations in Europe and Eurasia Marc Polymeropoulos join Ana Cabrera to discuss the significance of the summit being held at a U.S. military base.