Deputy National Security Adviser Dina Powell will leave the Trump administration early next year, the White House said Friday, the first in a series of departures of senior officials that administration officials expect in the coming weeks.

In a statement Friday, White House press secretary Sarah Huckabee Sanders called Ms. Powell a “key, trusted adviser” and said, “She has always planned to serve one year before returning home to New York, where she will continue to support the President’s agenda and work on Middle East policy.”

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