American Side
Donald Trump
U.S. president
State Department
Mike Pompeo
Secretary of state
White House
Robert Blair
Senior Adviser to Chief of Staff Mick Mulvaney
Vice President's staff
Keith Kellogg
National Security Adviser
Jennifer Williams
Adviser for Europe and Russia
National Security Council
Charles Kupperman
Deputy National Security Adviser
Timothy Morrison
Senior Director for European Affairs
Alexander Vindman
Top Ukraine expert
Other American staff
May include duty officers, policy staff and translators
Ukrainian Side
Volodymyr Zelenskiy
Ukraine president
Other Ukrainian staff
May include translators and other staff on the Ukrainian side of the call