Key Witness In Impeachment Inquiry Set To Leave His Position

Lieutenant Colonel Alexander Vinman may leave the National Security Council early, with reports suggesting either voluntary departure or forced exit. President Trump has criticized Vinman for his role in the impeachment inquiry and may target other officials for perceived disloyalty. Vinman testified about a call between Trump and Ukrainian President Zolensky, raising concerns about Trump's request to investigate an American citizen. Vinman is expected to be reassigned to the Defense Department.

What was the nature of the call that Vinman listened to between President Trump and Ukrainian President Vladimir Zolensky?

What are the implications of Vinman's testimony on U.S. foreign policy towards Ukraine?