Deputy National Security Adviser Nadia Schadlow has resigned, the third high-ranking official to exit the White House since new US National Security Adviser John Bolton took over on Monday, the media reported.
"We wish Nadia and her family the best."
An administration official said that Schadlow will remain in her post until April 27 in order to assist with the transition to her successor.
Schadlow was a trusted confidante of Bolton's predecessor, H.R. McMaster, and played a key role in crafting President Donald Trump's national security strategy, which was released last December.
"The strategy has set a strong foundation going forward for protecting the homeland, promoting American prosperity, preserving peace through strength and advancing American influence," Shah said on Wednesday.
She was tapped in January to take over for Dina Powell, who decided to step down last year as Deputy National Security Adviser.
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