Richard Grenell is shown in this undated file photo. He served as ambassador to Germany and later as acting Director of National Intelligence, both under President Trump. (AP Photo/Darko Vojinovic) **FILE**
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Richard Grenell is shown in this undated file photo. He served as ambassador to Germany and later as acting Director of National Intelligence, both under President Trump. (AP Photo/Darko Vojinovic) **FILE**
