Trump impeachment: Officer Alexander Vindman raised alarm over Ukraine call
2019-10-30 09:00:12 source：BBC
October 30, 2019
An official who heard a call between US President Donald Trump and Ukraine's president says he was concerned by Mr Trump's "demand" to scrutinise a rival.
Alexander Vindman told Congress he twice reported his objections to Mr Trump pressuring Ukraine to investigate leading US Democrat Joe Biden.
Col Vindman is the first White House official who heard the call to testify as part of the impeachment inquiry.
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