The content originally appeared on: CNN Washington (CNN)President Joe Biden will speak with Ukrainian President Volodymyr Zelensky on Sunday, several days after Biden urged Russian President Vladimir Putin to ease an unremitting military crisis on Ukraine's border. Biden, a White House official said, 'plans to speak by phone with President Zelensky of Ukraine on Sunday to reaffirm US support for Ukraine's sovereignty and territorial integrity, discuss Russia's military build-up on Ukraine's borders, and review preparations for upcoming diplomatic engagements to […]