US President Donald Trump's hawkish deputy national security adviser, Sebastian Gorka, has left the White House, it has been confirmed.
The latest White House departure came a week after his ally, ultra-conservative White House chief strategist Steve Bannon, was dismissed.
It is unclear whether Mr Gorka was also sacked or quit of his own accord.
He was quoted as writing in a letter that some in the White House were was seeking to undermine Mr Trump.
"[G]iven recent events, it is clear to me that forces that do not support the MAGA [Make America Great Again] promise are - for now - ascendant within the White House," he reportedly wrote in the letter, printed on conservative news site the Federalist.
The latest White House departure came a week after his ally, ultra-conservative White House chief strategist Steve Bannon, was dismissed.
It is unclear whether Mr Gorka was also sacked or quit of his own accord.
He was quoted as writing in a letter that some in the White House were was seeking to undermine Mr Trump.
"[G]iven recent events, it is clear to me that forces that do not support the MAGA [Make America Great Again] promise are - for now - ascendant within the White House," he reportedly wrote in the letter, printed on conservative news site the Federalist.