Russia's Putin Spoke To President Trump By Phone; Kremlin Says Conversation Was Open And Constructive; President Trump And Putin Discussed Outcome Of U.S. Envoys' Visit To Moscow And Kyiv; Trump Focused On Trying To Get Swift End To War In Ukraine; End Of War Would Immediately Open Up Impressive Potential To Restore U.S.-Russia Ties; Kremlin Says Trump Would Like U.S.-Russia Ties To Be Restored During His Presidency